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164-544: The via Tiberina, which owes its name to its path that follows that of the Tiber river, is one of the oldest roads in the area north of Rome: although there are references to it only in documents from the Constantinian era, its use is testified since prehistoric times, as a set of sheep tracks that connected the archaic centers located along the river, thus playing the role of a way of great communication, similarly to what happened on

328-560: A chi - rho inside the loop of an ankh . Following the battle and the defeat and death of Maxentius , Constantine became the undisputed emperor in the West and performed an adventus , a ceremonial entrance to the city. Arriving inside Rome's walls he ignored the altars to the gods prepared on the Capitoline Hill and did not carry out the customary sacrifices to celebrate a general's victorious entry into Rome, instead heading directly to

492-507: A Christian, he waited to be baptised on his deathbed, believing that the baptism would release him of any sins he committed in the course of carrying out his policies while emperor. He supported the Church financially, built basilicas, granted privileges to clergy (such as exemption from certain taxes), promoted Christians to high office, and returned property confiscated during the long period of persecution. His most famous building projects include

656-544: A collection of panegyrics from the late 3rd and early 4th centuries, provides valuable information on the politics and ideology of the tetrarchic period and the early life of Constantine. Contemporary architecture—such as the Arch of Constantine in Rome and palaces in Gamzigrad and Córdoba — epigraphic remains, and the coinage of the era complement the literary sources. Constantine

820-460: A cross-shaped (either Τ or †) symbol, whereas Lactantius's description suggests a staurogram (⳨), although the crux ansata (☥) or the Egyptian ankh (𓋹) have been proposed as interpretations as well. All of these symbols were used by Christians in the 3rd and 4th centuries. Eusebius concurs with Lactantius that a new device was added to Constantine's soldiers' shields but does not connect this with

984-468: A cross. Up at the extreme top a wreath woven of precious stones and gold had been fastened. On it two letters, imitating by its first characters the name "Christ," formed the monogram of the Saviour's title, rho being intersected in the middle by chi ... From the transverse bar, which was bisected by the pole, hung suspended a cloth ... But the upright pole ... carried the golden head-and-shoulders portrait of

1148-573: A dramatic series of events sometime between his father Constantius Chlorus 's death in 306 and the Battle of the Milvian Bridge on 28 October 312. The battle secured Constantine's claim to the title of augustus in the West, which he had assumed unilaterally when his father died. According to the Eusebius' Life of Constantine , Constantine saw a vision of "a cross-shaped trophy formed from light" above

1312-420: A grand adventus in the city which was met with jubilation. Maxentius' body was fished out of the Tiber and decapitated, and his head was paraded through the streets for all to see. After the ceremonies, the disembodied head was sent to Carthage, and Carthage offered no further resistance. Unlike his predecessors, Constantine neglected to make the trip to the Capitoline Hill and perform customary sacrifices at

1476-710: A half centuries. Their refusal to participate in the imperial cult was considered an act of treason and was thus punishable by execution. The most widespread official persecution was carried out by Diocletian beginning in 303. During the Great Persecution , the emperor ordered Christian buildings and the homes of Christians torn down and their sacred books collected and burned. Christians were arrested, tortured, mutilated, burned, starved, and condemned to gladiatorial contests to amuse spectators. The Great Persecution officially ended in April 311, when Galerius , senior emperor of

1640-541: A helmet emblazoned with the Chi Rho , and coins issued at Siscia in 317/318 repeat the image. The figure was otherwise rare and is uncommon in imperial iconography and propaganda before the 320s. It was not completely unknown, however, being an abbreviation of the Greek word chrēston (good), having previously appeared on the coins of Ptolemy III Euergetes in the 3rd century BC. Following Constantine, centuries of Christians invoked

1804-553: A large donative pledge to any who would support him as emperor, most of Constantine's army remained loyal to their emperor, and Maximian was soon compelled to leave. When Constantine heard of the rebellion, he abandoned his campaign against the Franks and marched his army up the Rhine. At Cabillunum ( Chalon-sur-Saône ), he moved his troops onto waiting boats to row down the slow waters of the Saône to

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1968-483: A long evening of drinking, Galerius granted the request. Constantine's later propaganda describes how he fled the court in the night, before Galerius could change his mind. He rode from post-house to post-house at high speed, hamstringing every horse in his wake. By the time Galerius awoke the following morning, Constantine had fled too far to be caught. Constantine joined his father in Gaul , at Bononia ( Boulogne ) before

2132-460: A military support, which Maxentius accepted. According to Eusebius, inter-regional travel became impossible, and there was military buildup everywhere. There was "not a place where people were not expecting the onset of hostilities every day". Constantine's advisers and generals cautioned against preemptive attack on Maxentius; even his soothsayers recommended against it, stating that the sacrifices had produced unfavourable omens. Constantine, with

2296-484: A palace complex in the northeastern part of the city. To the south of his palace, he ordered the construction of a large formal audience hall and a massive imperial bathhouse. He sponsored many building projects throughout Gaul during his tenure as emperor of the West, especially in Augustodunum ( Autun ) and Arelate ( Arles ). According to Lactantius, Constantine followed a tolerant policy towards Christianity, although he

2460-780: A period referred to as the Constantinian shift . This initiated the Christianization of the Roman Empire . Constantine is associated with the religiopolitical ideology known as Caesaropapism , which epitomizes the unity of church and state. He founded the city of Constantinople and made it the capital of the Empire, which remained so for over a millennium. Born in Naissus , in Dardania within Moesia Superior (now Niš , Serbia), Constantine

2624-531: A precedent for the position of the Christian emperor in the Church. Emperors considered themselves responsible to the gods for the spiritual health of their subjects, and after Constantine they had a duty to help the Church define and maintain orthodoxy. The Church generally regarded the definition of doctrine as the responsibility of the bishops ; the emperor's role was to enforce doctrine, root out heresy , and uphold ecclesiastical unity. The emperor ensured that God

2788-520: A protection against the attacks of the enemy. Writing his Church History shortly after 313, Eusebius makes no mention of this story in that work and does not recount it until composing his posthumous biography of Constantine decades afterwards. Life of Constantine was written by Eusebius after Constantine had died, and Eusebius admitted that he had heard the story from Constantine long after it had happened. Lactantius , writing 313–315 and around twenty years before Eusebius's Life , also does not mention

2952-449: A result of a debilitating sickness taken in the winter of 304–305, announced his resignation. In a parallel ceremony in Milan , Maximian did the same. Lactantius states that Galerius manipulated the weakened Diocletian into resigning and forced him to accept Galerius' allies in the imperial succession. According to Lactantius, the crowd listening to Diocletian's resignation speech believed, until

3116-508: A revolting and horrifying sight." Galerius died soon after the edict's proclamation, destroying what little remained of the Tetrarchy. Maximinus mobilised against Licinius and seized Asia Minor . A hasty peace was signed on a boat in the middle of the Bosphorus . While Constantine toured Britain and Gaul, Maxentius prepared for war. He fortified northern Italy and strengthened his support in

3280-544: A spirit that left a deep impression on his followers, inspiring some to believe that he had some form of supernatural guidance, ignored all these cautions. Early in the spring of 312, Constantine crossed the Cottian Alps with a quarter of his army, a force numbering about 40,000. The first town his army encountered was Segusium ( Susa , Italy), a heavily fortified town that shut its gates to him. Constantine ordered his men to set fire to its gates and scale its walls. He took

3444-461: A step further than the earlier Edict of Serdica by Galerius in 311, returning confiscated Church property. This edict made the empire officially neutral with regard to religious worship; it neither made the traditional religions illegal nor made Christianity the state religion , as occurred later with the Edict of Thessalonica of 380. The Edict of Milan did, however, raise the stock of Christianity within

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3608-460: A temple to Aphrodite . Generations later there was the story that a divine vision led Constantine to this spot, and an angel no one else could see led him on a circuit of the new walls. The capital would often be compared to the 'old' Rome as Nova Roma Constantinopolitana , the "New Rome of Constantinople". Constantine was the first emperor to stop the persecution of Christians and to legalize Christianity, along with all other religions/cults in

3772-435: A tolerant and politically skilled man, Constantius advanced through the ranks, earning the governorship of Dalmatia from Emperor Diocletian, another of Aurelian's companions from Illyricum , in 284 or 285. Constantine's mother was Helena , a Greek woman of low social standing from Helenopolis of Bithynia . It is uncertain whether she was legally married to Constantius or merely his concubine . His main language

3936-583: A vision in the sky. Instead, Lactantius mentions only that Constantine's dream took place on the eve of the climactic battle on the Ponte Milvio across the Tiber , with the crucial detail that the "sign" was marked on the Constantinian soldiers' shields. According to Lactantius: Constantine was advised in a dream to mark the heavenly sign of God on the shields of his soldiers and then engage in battle. He did as he

4100-415: A year, rejected it. Constantine sent Galerius an official notice of Constantius' death and his own acclamation. Along with the notice, he included a portrait of himself in the robes of an augustus. The portrait was wreathed in bay . He requested recognition as heir to his father's throne and passed off responsibility for his unlawful ascension on his army, claiming they had "forced it upon him". Galerius

4264-627: Is my Rome ". Sirmium and Thessalonica were also considered. Eventually, however, Constantine decided to work on the Greek city of Byzantium , which offered the advantage of having already been extensively rebuilt on Roman patterns of urbanism during the preceding century by Septimius Severus and Caracalla , who had already acknowledged its strategic importance. The city was thus founded in 324, dedicated on 11 May 330 and renamed Constantinopolis ("Constantine's City" or Constantinople in English). Special commemorative coins were issued in 330 to honor

4428-495: Is no consensus among scholars as to whether he adopted his mother Helena 's Christianity in his youth, or, as claimed by Eusebius of Caesarea , encouraged her to convert to the faith he had adopted. Constantine ruled the Roman Empire as sole emperor for much of his reign. Some scholars allege that his main objective was to gain unanimous approval and submission to his authority from all classes, and therefore he chose Christianity to conduct his political propaganda, believing that it

4592-520: Is not known. His praenomen is variously given as Lucius , Marcus and Gaius . Whatever the case, praenomina had already disappeared from most public records by this time. He also adopted the name "Valerius", the nomen of emperor Diocletian , following his father's ascension as caesar . Constantine probably spent little time with his father who was an officer in the Roman army, part of Emperor Aurelian 's imperial bodyguard. Being described as

4756-509: Is possible that Constantine's mother, Helena , exposed him to Christianity. In any case, he only declared himself a Christian after issuing the Edict of Milan . Writing to Christians, Constantine made clear that he believed that he owed his successes to the protection of the High God alone. In 310 a panegyric , preserved in the Panegyrici Latini collection and delivered at Trier for

4920-667: Is revered as a saint and isapostolos in the Eastern Orthodox Church , Oriental Orthodox Church , and various Eastern Catholic Churches for his example as a Christian monarch. The first recorded official persecution of Christians on behalf of the Roman Empire was in AD ;64, when, as reported by the Roman historian Tacitus , Emperor Nero attempted to blame Christians for the Great Fire of Rome . According to Church tradition, it

5084-461: Is somewhat doubtful, the fact is that he seems to have been far less open in his support of Christianity than Constantine. Therefore, Licinius was prone to see the Church as a force more loyal to Constantine than to the Imperial system in general, as the explanation offered by the Church historian Sozomen . This dubious arrangement eventually became a challenge to Constantine in the West, climaxing in

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5248-513: Is the anonymous Origo Constantini , a work of uncertain date which focuses on military and political events to the neglect of cultural and religious matters. Lactantius ' De mortibus persecutorum , a political Christian pamphlet on the reigns of Diocletian and the Tetrarchy , provides valuable but tendentious detail on Constantine's predecessors and early life. The ecclesiastical histories of Socrates , Sozomen , and Theodoret describe

5412-518: Is venerated as a saint in Eastern Christianity , and he did much to push Christianity towards the mainstream of Roman culture. The age of Constantine marked a distinct epoch in the history of the Roman Empire and a pivotal moment in the transition from classical antiquity to the Middle Ages . He built a new imperial residence in the city of Byzantium and renamed it New Rome , later adopting

5576-500: The Via Flaminia , allowing the weakness of Maxentius to draw his regime further into turmoil. Maxentius' support continued to weaken: at chariot races on 27 October, the crowd openly taunted Maxentius, shouting that Constantine was invincible. Maxentius, no longer certain that he would emerge from a siege victorious, built a temporary boat bridge across the Tiber in preparation for a field battle against Constantine. On 28 October 312,

5740-666: The limes , east of the Euphrates , the Sasanian rulers, perennially at war with Rome , had usually tolerated Christianity . Constantine is said to have written to Shapur II in 324 and urged him to protect Christians under his rule. With the establishment of Catholicism as the state religion of the Roman Empire, Christians in Persia would be regarded as allies of Persia's ancient enemy. According to an anonymous Christian account, Shapur II wrote to his generals: You will arrest Simon, chief of

5904-582: The 4th-century process of Constantine's integration of the imperial government with the Catholic Church that began with the First Council of Nicaea. The term was popularized by the Mennonite theologian John H. Yoder . The claim that there ever was a Constantinian shift has been disputed; Peter Leithart argues that there was a "brief, ambiguous 'Constantinian moment' in the fourth century," but that there

6068-722: The Church of the Holy Apostles ; although Eusebius does not mention any Byzantine church by name, he reports that Christian sites were numerous inside the city and around it. Later tradition ascribed to Constantine the foundations in Constantinople of the Church of Saint Menas , the Church of Saint Agathonicus , the Church of Saint Michael at nearby Anaplous , and the Church of Hagios Dynamis ( Ancient Greek : Άγιος Δύναμις , romanized :  Hagíos Dynamis , lit.   'Holy Power'). The reign of Constantine established

6232-506: The Church of the Holy Sepulchre and Old St. Peter's Basilica . In constructing the Old St. Peter's Basilica, Constantine went to great lengths to erect the basilica on top of St. Peter 's resting place, so much so that it even affected the design of the basilica, including the challenge of erecting it on the hill where St. Peter rested, making its complete construction time over 30 years from

6396-590: The Coptic Orthodox Church maintain that he was baptised by Pope Sylvester I . He played an influential role in the proclamation of the Edict of Milan in 313, which declared tolerance for Christianity in the Roman Empire. He convoked the First Council of Nicaea in 325 which produced the statement of Christian belief known as the Nicene Creed . The Church of the Holy Sepulchre was built on his orders at

6560-511: The First Council of Nicaea , effectively the first ecumenical council (unless the Council of Jerusalem is so classified). The Council of Nicaea is the first major attempt by Christians to define orthodoxy for the whole state. Until Nicaea, all previous Church councils had been local or regional synods affecting only portions of the Church. Nicaea dealt primarily with the Arian controversy. Constantine

6724-502: The Peshitta and Codex Alexandrinus , these are the earliest extant Christian Bibles. According to Socrates Scholasticus , Constantine commissioned the construction of the first Church of Hagia Irene in Constantinople, on the site now occupied by the Justinian church of the same name. It commemorated the peace won by Constantine and Crispus 's victory over Licinius and Licinius II at

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6888-626: The Sarmatians —and resettled territories abandoned by his predecessors during the Crisis of the Third Century with citizens of Roman culture. Although Constantine lived much of his life as a pagan and later as a catechumen , he began to favour Christianity beginning in 312, finally becoming a Christian and being baptised by Eusebius of Nicomedia , an Arian bishop, although the Catholic Church and

7052-638: The Temple of Jupiter . However, he did visit the Senatorial Curia Julia , and he promised to restore its ancestral privileges and give it a secure role in his reformed government; there would be no revenge against Maxentius' supporters. In response, the Senate decreed him "title of the first name", which meant that his name would be listed first in all official documents, and they acclaimed him as "the greatest augustus". He issued decrees returning property that

7216-550: The Tetrarchy , issued an edict of toleration which granted Christians the right to practice their religion, although it did not restore any property to them. Constantine , caesar in the Western Empire, and Licinius , caesar in the East, also were signatories to the edict. It has been speculated that Galerius' reversal of his long-standing policy of Christian persecution has been attributable to one or both of these co-caesars. It

7380-414: The de facto principle of dynastic succession by leaving the empire to his sons and other members of the Constantinian dynasty . His reputation flourished during the lifetime of his children and for centuries after his reign. The medieval church held him up as a paragon of virtue, while secular rulers invoked him as a prototype, a point of reference, and the symbol of imperial legitimacy and identity. At

7544-590: The Arian Philostorgius also survive, though their biases are no less firm. The epitomes of Aurelius Victor ( De Caesaribus ), Eutropius ( Breviarium ), Festus ( Breviarium ), and the anonymous author of the Epitome de Caesaribus offer compressed secular political and military histories of the period. Although not Christian, the epitomes paint a favourable image of Constantine but omit reference to Constantine's religious policies. The Panegyrici Latini ,

7708-642: The Battle of Chrysopolis in 324; its name, the Church of the Holy Peace ( Ancient Greek : Ἁγία Εἰρήνη , romanized :  Hagía Eirḗnē , lit.   'Holy Peace') recalled the Altar of Peace ( Latin : ara pacis ) built by Augustus , the first deified Roman emperor. Two other large churches were dedicated to Saint Mocius and to Saint Acacius ; both worthies had supposedly been martyred in Byzantium during

7872-409: The Battle of the Milvian Bridge, saying only that the "sign of the saving trophy" was marked, but not specifying when. Sometime after 317, Eusebius was permitted by Constantine, probably either in 325 or in 335, to see a standard that was made according to the emperor's dreamt instructions during the civil war. He described it as: A tall pole plated with gold had a transverse bar forming the shape of

8036-733: The Bosphorus and appointed Martinian , his magister officiorum , as nominal augustus in the West, but Constantine next won the Battle of the Hellespont and finally the Battle of Chrysopolis on 18 September 324. Licinius and Martinian surrendered to Constantine at Nicomedia on the promise their lives would be spared: they were sent to live as private citizens in Thessalonica and Cappadocia respectively, but in 325 Constantine accused Licinius of plotting against him and had them both arrested and hanged; Licinius' son (the son of Constantine's half-sister)

8200-546: The Bosporus and invaded European territory. Licinius departed and eventually defeated Maximinus, gaining control over the entire eastern half of the Roman Empire. Relations between the two remaining emperors deteriorated, as Constantine suffered an assassination attempt at the hands of a character that Licinius wanted elevated to the rank of Caesar; Licinius, for his part, had Constantine's statues in Emona destroyed. In either 314 or 316,

8364-479: The Christian community by allowing it to elect Eusebius as bishop of Rome . Maxentius' rule was nevertheless insecure. His early support dissolved in the wake of heightened tax rates and depressed trade; riots broke out in Rome and Carthage ; and Domitius Alexander was able to briefly usurp his authority in Africa. By 312, he was a man barely tolerated, not one actively supported, even among Christian Italians. In

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8528-504: The Christians. You will keep him until he signs this document and consents to collect for us a double tax and double tribute from the Christians … for we Gods have all the trials of war and they have nothing but repose and pleasure. They inhabit our territory and agree with Caesar, our enemy. Constantinian shift is a term used by some theologians and historians of antiquity to describe the political and theological aspects and outcomes of

8692-557: The Danube with a Sarmatian captive to drop at Galerius' feet. It is uncertain how much these tales can be trusted. Constantine recognised the implicit danger in remaining at Galerius' court, where he was held as a virtual hostage. His career depended on being rescued by his father in the West. Constantius was quick to intervene. In the late spring or early summer of 305, Constantius requested leave for his son to help him campaign in Britain. After

8856-529: The Diocletianic Persecution. The Church of St Mocius was supposed to have included parts of a former temple of Zeus or Hercules, though it is unlikely that such a temple existed on the site, which was without the walls of the Constantinian city as well as of erstwhile Severan Byzantium. According to Eusebius, Christian liturgies were also performed in Constantine's Mausoleum, the site of which became

9020-546: The East, and the military strategic importance of protecting the Danube from barbarian excursions and Asia from a hostile Persia in choosing his new capital as well as being able to monitor shipping traffic between the Black Sea and the Mediterranean. Licinius' defeat came to represent the defeat of a rival centre of pagan and Greek-speaking political activity in the East, as opposed to the Christian and Latin-speaking Rome, and it

9184-643: The East, from Nicomedia ( İzmit , Turkey). The division was merely pragmatic: the empire was called "indivisible" in official panegyric, and both emperors could move freely throughout the empire. In 288, Maximian appointed Constantius to serve as his praetorian prefect in Gaul . Constantius left Helena to marry Maximian's stepdaughter Theodora in 288 or 289. Diocletian divided the empire again in 293, appointing two caesars to rule over further subdivisions of East and West. Each would be subordinate to his respective augustus but would act with supreme authority in his assigned lands. This system would later be called

9348-597: The Emperor, to serve on campaigns against external enemies or Roman rebels, and frontier-garrison troops ( limitanei ) which were capable of countering barbarian raids, but less and less capable, over time, of countering full-scale barbarian invasions . Constantine pursued successful campaigns against the tribes on the Roman frontiers —such as the Franks , the Alemanni , the Goths , and

9512-447: The Godbeloved Emperor, and likewise of his sons. This later description of Eusebius's, written after 324, suggests a more elaborate symbol than does Lactantius's earlier text, involving the Greek letters rho (Ρ) and chi (Χ) ligature d as the c hi rho (☧), a monogram of Ancient Greek: χριστός , romanized:  khrīstós , lit.   'anointed', referring to Jesus . Possibly Eusebius's description refers to

9676-400: The Goths and Sarmatians in 322, and on the Goths in 323, defeating and killing their leader Rausimod . In 320, Licinius allegedly reneged on the religious freedom promised by the Edict of Milan and began to oppress Christians anew, generally without bloodshed, but resorting to confiscations and sacking of Christian office-holders. Although this characterization of Licinius as anti-Christian

9840-508: The Great Persecution of Diocletian, and endowed the church with land and other wealth. Between 324 and 330, Constantine built a new city, New Rome , at Byzantium on the Bosporos , which would be named Constantinople for him. Unlike "old" Rome, the city began to employ overtly Christian architecture, contained churches within the city walls, and had no pre-existing temples from other religions. In doing this, however, Constantine required those who had not converted to Christianity to pay for

10004-401: The Italian turmoil; now, instead of giving Maxentius military aid, he sent his troops against Germanic tribes along the Rhine. In 308, he raided the territory of the Bructeri and made a bridge across the Rhine at Colonia Agrippinensium ( Cologne ). In 310, he marched to the northern Rhine and fought the Franks. When not campaigning, he toured his lands advertising his benevolence and supporting

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10168-428: The Peace of the Church or the Constantinian shift . In 313, Constantine and Licinius issued the Edict of Milan decriminalizing Christian worship. The emperor became a great patron of the Church and set a precedent for the position of the Christian emperor within the Church and raised the notions of orthodoxy , Christendom , ecumenical councils , and the state church of the Roman Empire declared by edict in 380 . He

10332-408: The Picts and securing his control in the northwestern dioceses. He completed the reconstruction of military bases begun under his father's rule, and he ordered the repair of the region's roadways. He then left for Augusta Treverorum ( Trier ) in Gaul, the Tetrarchic capital of the northwestern Roman Empire. The Franks learned of Constantine's acclamation and invaded Gaul across the lower Rhine over

10496-425: The Praetorian Guard and Imperial Horse Guard . The tombstones of the Imperial Horse Guard were ground up and used in a basilica on the Via Labicana , and their former base was redeveloped into the Lateran Basilica on 9 November 312—barely two weeks after Constantine captured the city. The Legio II Parthica was removed from Albano Laziale , and the remainder of Maxentius' armies were sent to do frontier duty on

10660-418: The Rhine. In the following years, Constantine gradually consolidated his military superiority over his rivals in the crumbling Tetrarchy. In 313, he met Licinius in Milan to secure their alliance by the marriage of Licinius and Constantine's half-sister Constantia. During this meeting, the emperors agreed on the so-called Edict of Milan , officially granting full tolerance to Christianity and all religions in

10824-533: The Roman Empire. In February 313, he met with Licinius in Milan and developed the Edict of Milan, which stated that Christians should be allowed to follow their faith without oppression. This removed penalties for professing Christianity, under which many had been martyred previously , and it returned confiscated Church property. The edict protected all religions from persecution, not only Christianity, allowing anyone to worship any deity that they chose. A similar edict had been issued in 311 by Galerius, senior emperor of

10988-560: The Tetrarchy, which granted Christians the right to practise their religion but did not restore any property to them. The Edict of Milan included several clauses which stated that all confiscated churches would be returned, as well as other provisions for previously persecuted Christians. Some scholars think that Helena adopted Christianity as an adult, and according to Eusebius she was converted by Constantine, but other historians debate whether Constantine adopted his mother Helena's Christianity in his youth or whether he adopted it gradually over

11152-417: The Tetrarchy. Diocletian's first appointee for the office of Caesar was Constantius ; his second was Galerius , a native of Felix Romuliana . According to Lactantius , Galerius was a brutal, animalistic man. Although he shared the paganism of Rome's aristocracy, he seemed to them an alien figure, a semi-barbarian. On 1 March, Constantius was promoted to the office of Caesar, and dispatched to Gaul to fight

11316-455: The Tiber reaching the ancient center of Poggio Sommavilla and Foglia , continuing on the left bank, rejoined the Flaminia just south of Ocriculum . Along the route of the Tiberina there are many and very significant archaeological sites, such as the sanctuary of Lucus Feroniae and a lot of villas rustica among which the Villa dei Volusii stands out in Fiano Romano, which testify how it connected important centers of primary importance for

11480-437: The Veronese forces and Maxentius' praetorian prefect, was in a strong defensive position since the town was surrounded on three sides by the Adige . Constantine sent a small force north of the town in an attempt to cross the river unnoticed. Ruricius sent a large detachment to counter Constantine's expeditionary force but was defeated. Constantine's forces successfully surrounded the town and laid siege. Ruricius gave Constantine

11644-499: The beginning of the Renaissance , there were more critical appraisals of his reign with the rediscovery of anti-Constantinian sources. Trends in modern and recent scholarship have attempted to balance the extremes of previous scholarship. Constantine was a ruler of major importance and has always been a controversial figure. The fluctuations in his reputation reflect the nature of the ancient sources for his reign. These are abundant and detailed, but they have been strongly influenced by

11808-429: The cipher of Christ. Having this sign (☧), his troops stood to arms." Eusebius describes a vision that Constantine had while marching at midday in which "he saw with his own eyes the trophy of a cross of light in the heavens, above the sun, and bearing the inscription, In Hoc Signo Vinces " ("In this sign thou shalt conquer"). In Eusebius's account, Constantine had a dream the following night in which Christ appeared with

11972-610: The claimed site of Jesus' tomb in Jerusalem and was deemed the holiest place in all of Christendom . The papal claim to temporal power in the High Middle Ages was based on the fabricated Donation of Constantine . He has historically been referred to as the "First Christian Emperor", but while he did favour the Christian Church, some modern scholars debate his beliefs and even his comprehension of Christianity. Nevertheless, he

12136-413: The coinage of Constantine advertised Mars as his patron. From 310 on, Mars was replaced by Sol Invictus , a god conventionally identified with Apollo. There is little reason to believe that either the dynastic connection or the divine vision are anything other than fiction, but their proclamation strengthened Constantine's claims to legitimacy and increased his popularity among the citizens of Gaul. By

12300-482: The course of his life. Constantine possibly retained the title of pontifex maximus which emperors bore as heads of the ancient Roman religion until Gratian renounced the title. According to Christian writers, Constantine was over 40 when he finally declared himself a Christian, making it clear that he owed his successes to the protection of the Christian High God alone. Despite these declarations of being

12464-484: The course of the river and crossing the ancient ager capenate arriving at the sanctuary of Lucus Feroniae . From here it continued, always along the Tiber, towards the area of the current Ponzano Romano until it crosses the Treja  [ it ] river near Falerii Veteres ( Civita Castellana ). Here it was divided in two: one branch joined directly with the via Flaminia near Borghetto, probably while another crossed

12628-557: The date Constantine ordered it to be built. Constantine the Great and Christianity During the reign of the Roman emperor Constantine the Great (306–337 AD), Christianity began to transition to the dominant religion of the Roman Empire . Historians remain uncertain about Constantine's reasons for favoring Christianity, and theologians and historians have often argued about which form of early Christianity he subscribed to. There

12792-430: The demotion and continued to style himself as augustus on his coinage, even as other members of the Tetrarchy referred to him as a caesar on theirs. Maximinus was frustrated that he had been passed over for promotion while the newcomer Licinius had been raised to the office of augustus and demanded that Galerius promote him. Galerius offered to call both Maximinus and Constantine "sons of the augusti", but neither accepted

12956-487: The earlier rupture in their relations, Maxentius was eager to present himself as his father's devoted son after his death. He began minting coins with his father's deified image, proclaiming his desire to avenge Maximian's death. Constantine initially presented the suicide as an unfortunate family tragedy. By 311, however, he was spreading another version. According to this, after Constantine had pardoned him, Maximian planned to murder Constantine in his sleep. Fausta learned of

13120-408: The eastern front by the spring of 303, in time to witness the beginnings of Diocletian's " Great Persecution ", the most severe persecution of Christians in Roman history. In late 302, Diocletian and Galerius sent a messenger to the oracle of Apollo at Didyma with an inquiry about Christians. Constantine could recall his presence at the palace when the messenger returned and Diocletian accepted

13284-451: The eastern provinces (against the Persians ) before being recalled in the west (in AD 305) to fight alongside his father in the province of Britannia . After his father's death in 306, Constantine was proclaimed as augustus (emperor) by his army at Eboracum ( York , England). He eventually emerged victorious in the civil wars against emperors Maxentius and Licinius to become

13448-412: The ecclesiastic disputes of Constantine's later reign. Written during the reign of Theodosius II (r. 402–450), a century after Constantine's reign, these ecclesiastical historians obscure the events and theologies of the Constantinian period through misdirection, misrepresentation, and deliberate obscurity. The contemporary writings of the orthodox Christian Athanasius and the ecclesiastical history of

13612-400: The economy and the arts. His refusal to participate in the war increased his popularity among his people and strengthened his power base in the West. Maximian returned to Rome in the winter of 307–308 but soon fell out with his son. In early 308, after a failed attempt to usurp Maxentius' title, Maximian returned to Constantine's court. On 11 November 308, Galerius called a general council at

13776-518: The elder Emperor Maximian and needed a new source of legitimacy. In a speech delivered in Gaul on 25 July 310, the anonymous orator reveals a previously unknown dynastic connection to Claudius II , a 3rd-century emperor famed for defeating the Goths and restoring order to the empire. Breaking away from tetrarchic models, the speech emphasizes Constantine's ancestral prerogative to rule, rather than principles of imperial equality. The new ideology expressed in

13940-537: The emperor while practising incubation at the shrine of Apollo Grannus in Grand, Vosges . Eusebius was aware of this vision, or reports of it, and refers in his own Panegyric of Constantine of 336 to "tricennial crowns" bestowed by the hand of God in Christianity on Constantine, "augmenting the sway of his kingdom by long years". Eusebius of Caesarea and other Christian sources record that Constantine experienced

14104-402: The emperor's traditional purple robes . Constantine accepted the decision, knowing that it would remove doubts as to his legitimacy. Constantine's share of the empire consisted of Britain, Gaul, and Spain, and he commanded one of the largest Roman armies which was stationed along the important Rhine frontier. He remained in Britain after his promotion to emperor, driving back the tribes of

14268-401: The empire and reaffirmed the importance of religious worship to the welfare of the state. Most influential people in the empire, especially high military officials, had not been converted to Christianity and still participated in traditional Roman religion ; Constantine's rule exhibited at least a willingness to appease these factions. Coins minted up to eight years after the battle still bore

14432-442: The empire. The document had special benefits for Christians, legalizing their religion and granting them restoration for all property seized during Diocletian's persecution. It repudiates past methods of religious coercion and used only general terms to refer to the divine sphere—"Divinity" and "Supreme Divinity", summa divinitas . The conference was cut short, however, when news reached Licinius that his rival Maximinus had crossed

14596-560: The event. The new city was protected by the relics of the True Cross , the Rod of Moses and other holy relics, though a cameo now at the Hermitage Museum also represented Constantine crowned by the tyche of the new city. The figures of old gods were either replaced or assimilated into a framework of Christian symbolism . Constantine built the new Church of the Holy Apostles on the site of

14760-432: The face of Constantine, does not have an image of Constantine sacrificing to Jupiter, although he is shown sacrificing to Apollo and to Hercules . In 313 Constantine and Licinius announced "that it was proper that the Christians and all others should have liberty to follow that mode of religion which to each of them appeared best," thereby granting tolerance to all religions, including Christianity. The Edict of Milan went

14924-402: The field bearing unfamiliar symbols on their standards and their shields. According to Lactantius "Constantine was directed in a dream to cause the heavenly sign to be delineated on the shields of his soldiers, and so to proceed to battle. He did as he had been commanded, and he marked on their shields the letter Χ, with a perpendicular line drawn through it and turned round thus at the top, being

15088-420: The first charge. His horse guards and praetorians initially held their position, but they broke under the force of a Constantinian cavalry charge; they also broke ranks and fled to the river. Maxentius rode with them and attempted to cross the bridge of boats ( Ponte Milvio ), but he was pushed into the Tiber and drowned by the mass of his fleeing soldiers. Constantine entered Rome on 29 October 312 and staged

15252-414: The great civil war of 324. Constantine's Christian eulogists present the war as a battle between Christianity and paganism; Licinius, aided by Gothic mercenaries, represented the past and ancient paganism, while Constantine and his Franks marched under the standard of the labarum . Outnumbered but fired by their zeal, Constantine's army emerged victorious in the Battle of Adrianople . Licinius fled across

15416-538: The history of the area. Constantine the Great Constantine I ( Latin : Flavius Valerius Constantinus ; 27 February c.  272  – 22 May 337), also known as Constantine the Great , was a Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity . He played a pivotal role in elevating the status of Christianity in Rome, decriminalizing Christian practice and ceasing Christian persecution in

15580-537: The honours that he had granted to leaders of the Senate were also invalidated. Constantine also attempted to remove Maxentius' influence on Rome's urban landscape. All structures built by him were rededicated to Constantine, including the Temple of Romulus and the Basilica of Maxentius . At the focal point of the basilica, a stone statue was erected of Constantine holding the Christian labarum in its hand. Its inscription bore

15744-565: The images of Roman gods. The monuments he first commissioned, such as the Arch of Constantine, contained no reference to Christianity. The accession of Constantine was a turning point for early Christianity. After his victory, Constantine took over the role of patron of the Christian faith. He supported the Church financially, had a number of basilicas built, granted privileges (e.g., exemption from certain taxes) to clergy, promoted Christians to high-ranking offices, returned property confiscated during

15908-404: The imperial court's demands for universal persecution. On 23 February 303, Diocletian ordered the destruction of Nicomedia' s new church, condemned its scriptures to the flames, and had its treasures seized. In the months that followed, churches and scriptures were destroyed, Christians were deprived of official ranks, and priests were imprisoned. It is unlikely that Constantine played any role in

16072-600: The imperial court, the Eastern court and the major positions in the Eastern Church were held by Arians or Arian sympathizers. With the exception of a short period of eclipse, Eusebius enjoyed the complete confidence both of Constantine and Constantius II and was the tutor of Emperor Julian the Apostate . After Constantine's death, his son and successor Constantius II was an Arian, as was Emperor Valens . Constantine's position on

16236-516: The imperial palace. This is probably because the traditional Roman triumph , concluding with the sacrifice to Jupiter Optimus Maximus at his temple on the Capitoline, was traditionally celebrated after victory over Rome's enemies, rather than after the conquest of the city by a claimant in a civil war. The Arch of Constantine , for which numerous reliefs from earlier monuments depicting prior emperors sacrificing to various gods were re-carved with

16400-407: The joint occasion of the city's birthday and Constantine's quinquennalia , recounted a vision apparently seen by the emperor while journeying between Marseille and Trier. The panegyricist recounts that the god Apollo appeared to Constantine in company with Victoria and together presented him with three wreaths representing thirty years of power. This vision was perhaps in a dream experienced by

16564-403: The last moment, that Diocletian would choose Constantine and Maxentius (Maximian's son) as his successors. It was not to be: Constantius and Galerius were promoted to augusti , while Severus and Maximinus , Galerius' nephew, were appointed their caesars respectively. Constantine and Maxentius were ignored. Some of the ancient sources detail plots that Galerius made on Constantine's life in

16728-518: The message which the statue illustrated: "By this sign, Constantine had freed Rome from the yoke of the tyrant." Constantine also sought to upstage Maxentius' achievements. For example, the Circus Maximus was redeveloped so that its seating capacity was 25 times larger than that of Maxentius' racing complex on the Via Appia . Maxentius' strongest military supporters were neutralised when he disbanded

16892-519: The middle of 310, Galerius had become too ill to involve himself in imperial politics. His final act survives: a letter to provincials posted in Nicomedia on 30 April 311, proclaiming an end to the persecutions, and the resumption of religious toleration. Eusebius maintains "divine providence [...] took action against the perpetrator of these crimes" and gives a graphic account of Galerius' demise: "Without warning suppurative inflammation broke out round

17056-408: The middle of his genitals, then a deep-seated fistula ulcer; these ate their way incurably into his innermost bowels. From them came a teeming indescribable mass of worms, and a sickening smell was given off, for the whole of his hulking body, thanks to over eating, had been transformed even before his illness into a huge lump of flabby fat, which then decomposed and presented those who came near it with

17220-455: The military city of Carnuntum ( Petronell-Carnuntum , Austria) to resolve the instability in the western provinces. In attendance were Diocletian, briefly returned from retirement, Galerius, and Maximian. Maximian was forced to abdicate again and Constantine was again demoted to caesar. Licinius , one of Galerius' old military companions, was appointed augustus in the western regions. The new system did not last long: Constantine refused to accept

17384-523: The miracle. The Greek words Ἐν Τούτῳ Νίκα 'in this sign, conquer' are often rendered in Latin as in hoc signo vinces 'in this sign, you will conquer'. According to Eusebius, Constantine also had a dream that same night. In the dream, the Christ of God appeared to him with the sign which had appeared in the sky, and urged him to make himself a copy of the sign which had appeared in the sky, and to use this as

17548-419: The miraculous or the supernatural when justifying or describing their warfare. Constantine deployed his own forces along the whole length of Maxentius' line. He ordered his cavalry to charge, and they broke Maxentius' cavalry. He then sent his infantry against Maxentius' infantry, pushing many into the Tiber where they were slaughtered and drowned. The battle was brief, and Maxentius' troops were broken before

17712-710: The modern age. In the Republican era, the Tiberina departed from the Pons Sublicius which allowed the passage on the right bank of the Tiber, downstream of the Tiber Island .  Later, with the construction of the Flaminia, the route of the two roads was common from Ponte Milvio to Prima Porta ( ad gallinas albas ): here, immediately after the bridge over the ditch of Prima Porta, the Tiberina branched off continuing to follow

17876-420: The months following Diocletian's abdication. They assert that Galerius assigned Constantine to lead an advance unit in a cavalry charge through a swamp on the middle Danube, made him enter into single combat with a lion, and attempted to kill him in hunts and wars. Constantine always emerged victorious: the lion emerged from the contest in a poorer condition than Constantine; Constantine returned to Nicomedia from

18040-532: The name Constantinople after himself, where it was located in modern Istanbul . It subsequently became the capital of the empire for more than a thousand years, the later Eastern Roman Empire often being referred to in English as the Byzantine Empire , a term never used by the Empire, invented by German historian Hieronymus Wolf . His more immediate political legacy was that he replaced Diocletian's Tetrarchy with

18204-489: The new city. Christian chroniclers tell that it appeared necessary to Constantine "to teach his subjects to give up their rites ... and to accustom them to despise their temples and the images contained therein," This led to the closure of temples because of a lack of support, their wealth flowing to the imperial treasure; Constantine did not need to use force to implement this. It was the chronicler Theophanes who added centuries later that temples "were annihilated", but this

18368-431: The new title. By the spring of 310, Galerius was referring to both men as augusti. In 310, a dispossessed Maximian rebelled against Constantine while Constantine was away campaigning against the Franks. Maximian had been sent south to Arles with a contingent of Constantine's army, in preparation for any attacks by Maxentius in southern Gaul. He announced that Constantine was dead and took up the imperial purple. In spite of

18532-474: The north Italian plain sent Constantine embassies of congratulation for his victory. He moved on to Milan, where he was met with open gates and jubilant rejoicing. Constantine rested his army in Milan until mid-summer 312, when he moved on to Brixia ( Brescia ). Brescia's army was easily dispersed, and Constantine quickly advanced to Verona where a large Maxentian force was camped. Ruricius Pompeianus , general of

18696-591: The north without achieving great success. Constantius had become severely sick over the course of his reign and died on 25 July 306 in Eboracum . Before dying, he declared his support for raising Constantine to the rank of full Augustus. The Alamannic king Chrocus , a barbarian taken into service under Constantius, then proclaimed Constantine as augustus. The troops loyal to Constantius' memory followed him in acclamation. Gaul and Britain quickly accepted his rule; Hispania , which had been in his father's domain for less than

18860-522: The official propaganda of the period and are often one-sided; no contemporaneous histories or biographies dealing with his life and rule have survived. The nearest replacement is Eusebius 's Vita Constantini —a mixture of eulogy and hagiography written between 335 and circa 339 —that extols Constantine's moral and religious virtues. The Vita creates a contentiously positive image of Constantine, and modern historians have frequently challenged its reliability. The fullest secular life of Constantine

19024-562: The old family alliance between Maximian and Constantius and offer support to Maxentius' cause in Italy. Constantine accepted and married Fausta in Trier in summer 307. Constantine gave Maxentius his meagre support, offering Maxentius political recognition. Constantine remained aloof from the Italian conflict, however. Over the spring and summer of 307, he had left Gaul for Britain to avoid any involvement in

19188-431: The orator proclaims that Constantine experienced a divine vision of Apollo and Victory granting him laurel wreaths of health and a long reign. In the likeness of Apollo, Constantine recognised himself as the saving figure to whom would be granted "rule of the whole world", as the poet Virgil had once foretold. The oration's religious shift is paralleled by a similar shift in Constantine's coinage. In his early reign,

19352-507: The other side with the Via Salaria . It is also hypothesized that the Tiberina coincided in the area with the ancient Via Campana, a road used by the Etruscans since the 7th century BC to transport inland the salt extracted to the salt-field at the mouth of the Tiber. During the 4th century BC Rome, having definitively defeated the city of Veii and its Faliscan and Capenate allies, moved to

19516-540: The panegyrist the opportunity to comment favourably on the similarities between father and son, and Eusebius remarked that Constantine was a "renewal, as it were, in his own person, of his father's life and reign". Constantinian coinage, sculpture, and oratory also show a tendency for disdain towards the "barbarians" beyond the frontiers. He minted a coin issue after his victory over the Alemanni which depicts weeping and begging Alemannic tribesmen, "the Alemanni conquered" beneath

19680-448: The permanent and systematic conquest and occupation of the territory of the defeated: the Tiberina was readapted to the new Roman needs, also modifying the ancient layout that in fact, it took the path it has maintained until the modern era. The Roman restructuring work in many points exceeded the limits due to the orography of the territory in favor of direct connections between the centers of greater importance, as evidenced for example by

19844-412: The persecution. In his later writings, he attempted to present himself as an opponent of Diocletian's "sanguinary edicts" against the "Worshippers of God", but nothing indicates that he opposed it effectively at the time. Although no contemporary Christian challenged Constantine for his inaction during the persecutions, it remained a political liability throughout his life. On 1 May 305, Diocletian, as

20008-440: The phrase "Romans' rejoicing". There was little sympathy for these enemies; as his panegyrist declared, "It is a stupid clemency that spares the conquered foe." Following Galerius' recognition of Constantine as caesar, Constantine's portrait was brought to Rome, as was customary. Maxentius mocked the portrait's subject as the son of a harlot and lamented his own powerlessness. Maxentius, envious of Constantine's authority, seized

20172-475: The plot and warned Constantine, who put a eunuch in his own place in bed. Maximian was apprehended when he killed the eunuch and was offered suicide, which he accepted. Along with using propaganda, Constantine instituted a damnatio memoriae on Maximian, destroying all inscriptions referring to him and eliminating any public work bearing his image. The death of Maximian required a shift in Constantine's public image. He could no longer rely on his connection to

20336-404: The products of the surrounding fertile territory to the Roman market, as well as a necessary support for river navigation and with a local viability function. And this function of connection between the area of the western side of the lower Tiber valley and Rome remained unchanged for the following centuries, thus representing the Tiberina one of the main roads for all the centers of the area up to

20500-488: The quicker waters of the Rhone . He disembarked at Lugdunum ( Lyon ). Maximian fled to Massilia ( Marseille ), a town better able to withstand a long siege than Arles. It made little difference, however, as loyal citizens opened the rear gates to Constantine. Maximian was captured and reproved for his crimes. Constantine granted some clemency but strongly encouraged his suicide. In July 310, Maximian hanged himself . In spite of

20664-512: The rebels Carausius and Allectus . In spite of meritocratic overtones, the Tetrarchy retained vestiges of hereditary privilege, and Constantine became the prime candidate for future appointment as Caesar as soon as his father took the position. Constantine went to the court of Diocletian, where he lived as his father's heir presumptive . Constantine received a formal education at Diocletian's court, where he learned Latin literature, Greek, and philosophy. The cultural environment in Nicomedia

20828-403: The religions traditionally practiced in Rome evolved during his reign. In fact, his coinage and other official motifs, until 325, had affiliated him with the pagan cult of Sol Invictus. At first, Constantine encouraged the construction of new temples and tolerated traditional sacrifices ; by the end of his reign, he had begun to order the pillaging and tearing down of Roman temples . Beyond

20992-451: The same heavenly sign and told him to make an army standard in the form of the labarum . Eusebius is vague about when and where these events took place, but it enters his narrative before the war begins against Maxentius. He describes the sign as Chi (Χ) traversed by Rho (Ρ) to form ☧, representing the first two letters of the Greek word ΧΡΙΣΤΟΣ (Christos). A medallion was issued at Ticinum in 315 which shows Constantine wearing

21156-503: The same type of war he had waged against Severus and Galerius: he occupied Rome and prepared for a siege. He still controlled Rome's Praetorian Guard , was well-stocked with African grain, and was surrounded on all sides by the seemingly impregnable Aurelian Walls . He ordered all bridges across the Tiber cut, reportedly on the counsel of the gods, and left the rest of central Italy undefended; Constantine secured that region's support without challenge. Constantine progressed slowly along

21320-654: The scriptures were commissioned. The volumes were likely gospel books containing the Canonical Gospels of the Four Evangelists rather than complete Bibles with the entire Biblical canon , which were very rare in antiquity. Athanasius ( Apol. Const. 4 ) recorded around 340 Alexandrian scribes preparing Bibles for Constans . Little else is known. It has been speculated that this may have provided motivation for canon lists , and that Codex Vaticanus and Codex Sinaiticus are examples of these Bibles. Together with

21484-533: The sixth anniversary of his reign, he approached the keepers of the Sibylline Books for guidance. The keepers prophesied that, on that very day, "the enemy of the Romans" would die. Maxentius advanced north to meet Constantine in battle. Maxentius' forces were still twice the size of Constantine's, and he organised them in long lines facing the battle plain with their backs to the river. Constantine's army arrived on

21648-422: The slip and returned with a larger force to oppose Constantine. Constantine refused to let up on the siege and sent only a small force to oppose him. In the desperately fought encounter that followed, Ruricius was killed and his army destroyed. Verona surrendered soon afterwards, followed by Aquileia , Mutina ( Modena ), and Ravenna . The road to Rome was now wide open to Constantine. Maxentius prepared for

21812-471: The sole ruler of the Roman Empire by 324. Upon his ascension, Constantine enacted numerous reforms to strengthen the empire. He restructured the government, separating civil and military authorities. To combat inflation, he introduced the solidus , a new gold coin that became the standard for Byzantine and European currencies for more than a thousand years. The Roman army was reorganised to consist of mobile units ( comitatenses ), often around

21976-434: The speech made Galerius and Maximian irrelevant to Constantine's right to rule. Indeed, the orator emphasizes ancestry to the exclusion of all other factors: "No chance agreement of men, nor some unexpected consequence of favour, made you emperor," the orator declares to Constantine. The oration also moves away from the religious ideology of the Tetrarchy, with its focus on twin dynasties of Jupiter and Hercules . Instead,

22140-471: The straight section between the locality of Scorano and the current city of Fiano Romano , completely coinciding with that of the Roman era.  Although it lost part of its importance as a connection with Umbria and the upper Sabina with the construction of the Via Flaminia , around 220 BC, the Tiberina nevertheless remained, both in the republican and in the imperial age , a rapid and safe to transport

22304-568: The summer of 305. From Bononia, they crossed the English Channel to Britain and made their way to Eboracum ( York ), capital of the province of Britannia Secunda and home to a large military base. Constantine was able to spend a year in northern Britain at his father's side, campaigning against the Picts beyond Hadrian's Wall in the summer and autumn. Constantius' campaign, like that of Septimius Severus before it, probably advanced far into

22468-581: The summer of 311, Maxentius mobilised against Constantine while Licinius was occupied with affairs in the East. He declared war on Constantine, vowing to avenge his father's "murder". To prevent Maxentius from forming an alliance against him with Licinius, Constantine forged his own alliance with Licinius over the winter of 311–312 and offered him his sister Constantia in marriage. Maximinus considered Constantine's arrangement with Licinius an affront to his authority. In response, he sent ambassadors to Rome, offering political recognition to Maxentius in exchange for

22632-438: The sun at midday. About the time of the midday sun, when the day was just turning, he said he saw with his own eyes up in the sky and resting over the sun, a cross-shaped trophy formed from light, and a text attached to it which said, "By this conquer." ( τούτῳ νίκα ) Amazement at the spectacle seized both him and the whole company of soldiers which was then accompanying him on a campaign he was conducting somewhere, and witnessed

22796-528: The title of emperor on 28 October 306. Galerius refused to recognize him but failed to unseat him. Severus was sent against Maxentius in April 307, but during the campaign, Severus' armies, previously under command of Maxentius' father Maximian, defected, and Severus was seized and imprisoned. Maximian, brought out of retirement by his son's rebellion, left for Gaul to confer with Constantine. He offered to marry his daughter Fausta to Constantine and elevate him to augustan rank. In return, Constantine would reaffirm

22960-667: The town quickly. Constantine ordered his troops not to loot the town and advanced into northern Italy. At the approach to the west of the important city of Augusta Taurinorum ( Turin , Italy), Constantine met a large force of heavily armed Maxentian cavalry. In the ensuing Battle of Turin Constantine's army encircled Maxentius' cavalry, flanked them with his own cavalry, and dismounted them with blows from his soldiers' iron-tipped clubs. Constantine's armies emerged victorious. Turin refused to give refuge to Maxentius' retreating forces, opening its gates to Constantine instead. Other cities of

23124-445: The two augusti fought against one another at the Battle of Cibalae , with Constantine being victorious. They clashed again at the Battle of Mardia in 317 and agreed to a settlement in which Constantine's sons Crispus and Constantine II , and Licinius' son Licinius Junior were made caesars . After this arrangement, Constantine ruled the dioceses of Pannonia and Macedonia and took residence at Sirmium , whence he could wage war on

23288-401: The winter of 306–307. He drove them back beyond the Rhine and captured kings Ascaric and Merogais ; the kings and their soldiers were fed to the beasts of Trier Amphitheater in the adventus (arrival) celebrations which followed. Constantine began a major expansion of Trier. He strengthened the circuit wall around the city with military towers and fortified gates, and he began building

23452-487: Was Latin , and during his public speeches he needed Greek translators. In April 286, Diocletian declared Maximian , another colleague from Illyricum, his co-emperor. Each emperor would have his own court, his own military and administrative faculties, and each would rule with a separate praetorian prefect as chief lieutenant. Maximian ruled in the West, from his capitals at Mediolanum ( Milan , Italy) or Augusta Treverorum ( Trier , Germany), while Diocletian ruled in

23616-559: Was abolished for reasons of Christian piety but was replaced with hanging , to demonstrate the preservation of Roman supremacy. On March 7, 321, Sunday, which was sacred to Christians as the day of Christ's resurrection and to the Roman Sun God Sol Invictus , was declared an official day of rest. On that day markets were banned and public offices were closed, except for the purpose of freeing slaves. There were, however, no restrictions on performing farming work on Sundays, which

23780-564: Was born on 27 February, c.  AD 272 in the city of Naissus , a time where the unity of the Empire was threatened by the breakaway wars of the Palmyrene Empire . The city—which is modern day Niš in Serbia —was located in Dardania within Moesia Superior . His father was Flavius Constantius an Illyrian who was born in the same region, and a native of the province of Moesia. His original full name, as well as that of his father,

23944-530: Was claimed he was baptized only on his deathbed by the Arian bishop Eusebius of Nicomedia in 337; the real reasons behind it remain unknown and are debated also. According to Hans Pohlsander, professor emeritus of history at the State University of New York at Albany , Constantine's conversion was a matter of realpolitik, meant to serve his political interest in keeping the empire united under his control: The prevailing spirit of Constantine's government

24108-417: Was commanded and by means of a letter X turned sideways, with the top of its head bent around ( transversa X littera , summo capite circumflexo ), he marked Christ on their shields ( Christum in scutis notat ). Armed with this sign, the army took up its weapons. It is unclear from these sources what Constantine saw and what was marked on his army's shields. Eusebius's description of the daytime vision suggests

24272-465: Was considered "not true" by contemporary historians. Constantine respected cultivated persons, and his court was composed of older, respected, and honored men. Men from leading Roman families who declined to convert to Christianity were denied positions of power yet still received appointments; even up to the end of his life, two-thirds of his top government were non-Christian. Constantine's laws enforced and reflected his Christian attitudes. Crucifixion

24436-465: Was during the reign of Nero that Peter and Paul were martyred in Rome. However, modern historians debate whether the Roman government distinguished between Christians and Jews prior to Nerva 's modification of the Fiscus Judaicus in 96, from which point practising Jews paid the tax and Christians did not. Christians suffered from sporadic and localized persecutions over a period of two and

24600-781: Was in less danger of polluting his soul with sin and not getting to heaven. He was baptized by his distant relative Arian Bishop Eusebius of Nicomedia or by Pope Sylvester I which is maintained by the Catholic Church , the Coptic Orthodox Church , the Antiochian Orthodox Church , the Greek Orthodox Church , the Russian Orthodox Church , the Serbian Orthodox Church , upon by many other Eastern Orthodox , Nestorian Orthodox , and Oriental Orthodox Churches. During Eusebius of Nicomedia's time in

24764-404: Was killed in 326. Thus Constantine became the sole emperor of the Roman Empire. Diocletian had chosen Nicomedia in the East as his capital during the Tetrarchy —not far from Byzantium, well situated to defend Thrace, Asia, and Egypt, all of which had required his military attention. Constantine had recognised the shift of the empire from the remote and depopulated West to the richer cities of

24928-439: Was lost under Maxentius, recalling political exiles, and releasing Maxentius' imprisoned opponents. An extensive propaganda campaign followed, during which Maxentius' image was purged from all public places. He was written up as a "tyrant" and set against an idealised image of Constantine the "liberator". Eusebius is the best representative of this strand of Constantinian propaganda. Maxentius' rescripts were declared invalid, and

25092-685: Was nonetheless a prominent member of the court: he fought for Diocletian and Galerius in Asia and served in a variety of tribunates ; he campaigned against barbarians on the Danube in 296 and fought the Persians under Diocletian in Syria in 297, as well as under Galerius in Mesopotamia in 298–299. By late 305, he had become a tribune of the first order, a tribunus ordinis primi . Constantine had returned to Nicomedia from

25256-528: Was not yet a Christian. He probably judged it a more sensible policy than open persecution and a way to distinguish himself from the "great persecutor" Galerius. He decreed a formal end to persecution and returned to Christians all that they had lost during them. Constantine was largely untried and had a hint of illegitimacy about him; he relied on his father's reputation in his early propaganda, which gave as much coverage to his father's deeds as to his. His military skill and building projects, however, soon gave

25420-456: Was one of conservatism. His conversion to and support of Christianity produced fewer innovations than one might have expected; indeed they served an entirely conservative end, the preservation and continuation of the Empire. Constantine's decision to cease the persecution of Christians in the Roman Empire was a turning point for early Christianity, sometimes referred to as the Triumph of the Church,

25584-469: Was open, fluid, and socially mobile; in it, Constantine could mix with intellectuals both pagan and Christian. He may have attended the lectures of Lactantius, a Christian scholar of Latin in the city. Because Diocletian did not completely trust Constantius—none of the Tetrarchs fully trusted their colleagues—Constantine was held as something of a hostage, a tool to ensure Constantius' best behavior. Constantine

25748-704: Was properly worshiped in his empire; what proper worship (orthodoxy) and doctrines and dogma consisted of was for the Church to determine. Constantine had become a worshiper of the Christian God, but he found that there were many opinions on that worship and indeed on who and what that God was. In 316, Constantine was asked to adjudicate in a North African dispute of the Donatist sect (who began by refusing obedience to any bishops who had yielded in any way to persecution, later regarding all bishops but their own sect as utterly contaminated). More significantly, in 325 he summoned

25912-476: Was proposed that a new Eastern capital should represent the integration of the East into the Roman Empire as a whole, as a centre of learning, prosperity, and cultural preservation for the whole of the Eastern Roman Empire. Among the various locations proposed for this alternative capital, Constantine appears to have toyed earlier with Serdica (present-day Sofia ), as he was reported saying that " Serdica

26076-445: Was put into a fury by the message; he almost set the portrait and messenger on fire. His advisers calmed him and argued that outright denial of Constantine's claims would mean certain war. Galerius was compelled to compromise: he granted Constantine the title "caesar" rather than "augustus" (the latter office went to Severus instead). Wishing to make it clear that he alone gave Constantine legitimacy, Galerius personally sent Constantine

26240-491: Was supposed to have made man in his image, but only on the feet. Publicly displayed gladiatorial games were ordered to be eliminated in 325. According to Eusebius, in 331 Constantine had commissioned him to deliver fifty volumes of scriptures for the churches of Constantinople, which were to be bound in leather and easily portable. Only three or four churches are known certainly to have existed in Constantine's reign, but others appear to have been planned or established, for which

26404-458: Was the most appropriate religion that could fit with the imperial cult . Regardless, under the Constantinian dynasty Christianity expanded throughout the empire, launching the era of the state church of the Roman Empire . Whether Constantine sincerely converted to Christianity or remained loyal to paganism is a matter of debate among historians. His formal conversion in 312 is almost universally acknowledged among historians, despite that it

26568-459: Was the son of Flavius Constantius , a Roman army officer of Illyrian origin who had been one of the four rulers of the Tetrarchy . His mother, Helena , was a Greek woman of low birth, probably from Asia Minor in modern Turkey . Later canonised as a saint , she is traditionally credited for the conversion of her son. Constantine served with distinction under the Roman emperors Diocletian and Galerius . He began his career by campaigning in

26732-411: Was the work of the great majority of the population. Some laws made during his reign were even humane in the modern sense and supported tolerance, possibly inspired by his Christianity: a prisoner was no longer to be kept in total darkness but must be given the outdoors and daylight; a condemned man was allowed to die in the arena, but he could not be branded on his "heavenly beautified" face, since God

26896-580: Was torn between the Arian and Trinitarian camps. After the Nicene council, and against its conclusions, he eventually recalled Arius from exile and banished Athanasius of Alexandria to Trier . Just before his death in May 337, it is claimed that Constantine was baptised into Christianity. Up until this time he had been a catechumen for most of his adult life. He believed that if he waited to get baptized on his death bed he

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