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121-593: The Cambridge Modern History is a comprehensive modern history of the world , beginning with the 15th century Age of Discovery , published by the Cambridge University Press in England and also in the United States. The first series, planned by Lord Acton and edited by him with Stanley Mordaunt Leathes , Sir Adolphus William Ward and G. W. Prothero , was launched in 1902 and totalled fourteen volumes,

242-592: A Second Industrial Revolution which enabled Germany , Japan , and the United States to become great powers that raced to create empires of their own . However, Russia and China failed to keep pace with the other world powers, which led to massive social unrest in both empires. While earlier centuries also saw significant developments, the 20th century was distinguished by the unprecedented pace and global scale of economic, technological, and cultural changes. Still, advancing technology and medicine have had

363-538: A century before, were first observed . In 2019, the international collaboration Event Horizon Telescope presented the first direct image of a black hole 's accretion disc . Modern science is commonly divided into three major branches : natural science , social science , and formal science . Each of these branches comprises various specialised yet overlapping scientific disciplines that often possess their own nomenclature and expertise. Both natural and social sciences are empirical sciences , as their knowledge

484-474: A discipline. Ideas on human nature, society, and economics evolved during the Enlightenment. Hume and other Scottish Enlightenment thinkers developed A Treatise of Human Nature , which was expressed historically in works by authors including James Burnett , Adam Ferguson , John Millar and William Robertson , all of whom merged a scientific study of how humans behaved in ancient and primitive cultures with

605-411: A few of their scientific predecessors – Galileo , Kepler , Boyle , and Newton principally – as the guides to every physical and social field of the day. The 18th century saw significant advancements in the practice of medicine and physics; the development of biological taxonomy by Carl Linnaeus ; a new understanding of magnetism and electricity; and the maturation of chemistry as

726-504: A great impact even in the Global South . Large-scale industry and more centralized media made brutal dictatorships possible on an unprecedented scale in the middle of the century, leading to wars that were also unprecedented. However, the increased communications contributed to democratization . Technological developments included the development of airplanes and space exploration , nuclear technology , advancement in genetics , and

847-423: A greater role in knowledge creation and it was not until the 19th century that many of the institutional and professional features of science began to take shape, along with the changing of "natural philosophy" to "natural science". New knowledge in science is advanced by research from scientists who are motivated by curiosity about the world and a desire to solve problems. Contemporary scientific research

968-466: A highly stable universe where there could be little loss of resources. However, with the advent of the steam engine and the Industrial Revolution there was an increased understanding that not all forms of energy have the same energy qualities , the ease of conversion to useful work or to another form of energy. This realisation led to the development of the laws of thermodynamics , in which

1089-455: A hypothesis proves unsatisfactory it is modified or discarded. If the hypothesis survives testing, it may become adopted into the framework of a scientific theory , a validly reasoned , self-consistent model or framework for describing the behaviour of certain natural events. A theory typically describes the behaviour of much broader sets of observations than a hypothesis; commonly, a large number of hypotheses can be logically bound together by

1210-640: A mutual defense agreement, the Tripartite Pact , and were known as the Axis Powers . Nine months later, on June 22, 1941, Germany launched a massive invasion of the Soviet Union, which prompted it to join the Allies. Germany was now engaged in fighting a war on two fronts. On December 7, 1941, Japan attacked the United States at Pearl Harbor , bringing it too into the war on the side of the Allies. China also joined

1331-407: A new non- teleological way. This implied a shift in the view of objects: objects were now considered as having no innate goals. Leibniz assumed that different types of things all work according to the same general laws of nature, with no special formal or final causes. During this time the declared purpose and value of science became producing wealth and inventions that would improve human lives, in

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1452-458: A preference for one outcome over another. Eliminating the bias can be achieved through transparency, careful experimental design , and a thorough peer review process of the experimental results and conclusions. After the results of an experiment are announced or published, it is normal practice for independent researchers to double-check how the research was performed, and to follow up by performing similar experiments to determine how dependable

1573-456: A priori disciplines and because of this, there is disagreement on whether they constitute a science. Nevertheless, the formal sciences play an important role in the empirical sciences. Calculus , for example, was initially invented to understand motion in physics. Natural and social sciences that rely heavily on mathematical applications include mathematical physics , chemistry , biology , finance , and economics . Applied science

1694-400: A revolution in information technology and the rise of the global internet and mobile computing , including smartphones . The need for mass systematisation of long, intertwined causal chains and large amounts of data led to the rise of the fields of systems theory and computer-assisted scientific modelling . The Human Genome Project was completed in 2003 by identifying and mapping all of

1815-457: A separate discipline from philosophy when Wilhelm Wundt founded the first laboratory for psychological research in 1879. During the mid-19th century Charles Darwin and Alfred Russel Wallace independently proposed the theory of evolution by natural selection in 1858, which explained how different plants and animals originated and evolved. Their theory was set out in detail in Darwin's book On

1936-592: A separate field because they rely on deductive reasoning instead of the scientific method or empirical evidence as their main methodology. Applied sciences are disciplines that use scientific knowledge for practical purposes, such as engineering and medicine . The history of science spans the majority of the historical record, with the earliest written records of identifiable predecessors to modern science dating to Bronze Age Egypt and Mesopotamia from around 3000 to 1200 BCE . Their contributions to mathematics, astronomy , and medicine entered and shaped

2057-475: A set of basic assumptions that are needed to justify the scientific method: there is an objective reality shared by all rational observers; this objective reality is governed by natural laws ; these laws were discovered by means of systematic observation and experimentation. Mathematics is essential in the formation of hypotheses , theories , and laws, because it is used extensively in quantitative modelling, observing, and collecting measurements . Statistics

2178-463: A set of rules. It includes mathematics, systems theory , and theoretical computer science . The formal sciences share similarities with the other two branches by relying on objective, careful, and systematic study of an area of knowledge. They are, however, different from the empirical sciences as they rely exclusively on deductive reasoning, without the need for empirical evidence, to verify their abstract concepts. The formal sciences are therefore

2299-478: A single theory. Thus, a theory is a hypothesis explaining various other hypotheses. In that vein, theories are formulated according to most of the same scientific principles as hypotheses. Scientists may generate a model , an attempt to describe or depict an observation in terms of a logical, physical or mathematical representation, and to generate new hypotheses that can be tested by experimentation. While performing experiments to test hypotheses, scientists may have

2420-625: A sphere of influence over the area. These claims did not have to have any substantial land holdings or treaties to be legitimate. The French gained major ground in West Africa , the British in East Africa , and the Portuguese and Spanish at various points throughout the continent, while Leopold II of Belgium was able to retain his personal fiefdom, Congo . Electricity, steel, and petroleum fuelled

2541-429: A strong awareness of the determining forces of modernity . Modern sociology largely originated from this movement. In 1776, Adam Smith published The Wealth of Nations , which is often considered the first work on modern economics. During the nineteenth century many distinguishing characteristics of contemporary modern science began to take shape. These included the transformation of the life and physical sciences;

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2662-551: A threat, it was causing anti-Western and anti-American feelings in parts of the world, especially in the Middle East . English was quickly becoming the global language, with people who did not speak it becoming increasingly disadvantaged. Terrorism , dictatorship , and the spread of nuclear weapons were also issues requiring immediate attention. Dictators such as Kim Jong-il in North Korea continued to lead their nations toward

2783-438: A unified theory in the early 20th-century when the modern synthesis reconciled Darwinian evolution with classical genetics . Albert Einstein 's theory of relativity and the development of quantum mechanics complement classical mechanics to describe physics in extreme length , time and gravity . Widespread use of integrated circuits in the last quarter of the 20th century combined with communications satellites led to

2904-611: Is a term usually applied to the history of art, architecture and music during this period. Historians sometimes define a nineteenth century historical era stretching from 1815 (the Congress of Vienna) to 1914 (the outbreak of the First World War ); alternatively, Eric Hobsbawm defined the " long nineteenth century " as spanning the years 1789 to 1914. During this century, the Spanish , Portuguese , and Ottoman Empires began to crumble and

3025-511: Is an important transition period beginning between the Late Middle Ages and Early Modern Times, which started in Italy. " Postmodernism ", coined 1949, on the other hand, would describe rather a movement in art than a period of history, and is usually applied to arts, but not to any events of the very recent history. This changed, when postmodernity was coined to describe the major changes in

3146-487: Is based on empirical observations and is capable of being tested for its validity by other researchers working under the same conditions. Natural science is the study of the physical world. It can be divided into two main branches: life science and physical science . These two branches may be further divided into more specialised disciplines. For example, physical science can be subdivided into physics, chemistry , astronomy , and earth science . Modern natural science

3267-439: Is becoming a central feature of computational contributions to science, for example in agent-based computational economics , random forests , topic modeling and various forms of prediction. However, machines alone rarely advance knowledge as they require human guidance and capacity to reason; and they can introduce bias against certain social groups or sometimes underperform against humans. Interdisciplinary science involves

3388-441: Is closely associated with the development of individualism , capitalism , urbanization , and a belief in the positive possibilities of technological and political progress . The brutal wars and other conflicts of this era , many of which come from the effects of rapid change, and the connected loss of strength of traditional religious and ethical norms, have led to many reactions against modern development . Optimism and

3509-698: Is considered to be one of the most important publications in medicine and was used until the 18th century. By the eleventh century most of Europe had become Christian, and in 1088, the University of Bologna emerged as the first university in Europe. As such, demand for Latin translation of ancient and scientific texts grew, a major contributor to the Renaissance of the 12th century . Renaissance scholasticism in western Europe flourished, with experiments done by observing, describing, and classifying subjects in nature. In

3630-535: Is highly collaborative and is usually done by teams in academic and research institutions , government agencies, and companies. The practical impact of their work has led to the emergence of science policies that seek to influence the scientific enterprise by prioritising the ethical and moral development of commercial products, armaments, health care, public infrastructure, and environmental protection . The word science has been used in Middle English since

3751-447: Is the search for solutions to practical problems using this knowledge. Most understanding comes from basic research, though sometimes applied research targets specific practical problems. This leads to technological advances that were not previously imaginable. Scientific research involves using the scientific method , which seeks to objectively explain the events of nature in a reproducible way. Scientists usually take for granted

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3872-526: Is the successor to the natural philosophy that began in Ancient Greece . Galileo , Descartes , Bacon , and Newton debated the benefits of using approaches that were more mathematical and more experimental in a methodical way. Still, philosophical perspectives, conjectures , and presuppositions , often overlooked, remain necessary in natural science. Systematic data collection, including discovery science , succeeded natural history , which emerged in

3993-427: Is the use of the scientific method and knowledge to attain practical goals and includes a broad range of disciplines such as engineering and medicine. Engineering is the use of scientific principles to invent, design and build machines, structures and technologies. Science may contribute to the development of new technologies. Medicine is the practice of caring for patients by maintaining and restoring health through

4114-403: Is used to make falsifiable predictions, which are typically posted before being tested by experimentation. Disproof of a prediction is evidence of progress. Experimentation is especially important in science to help establish causal relationships to avoid the correlation fallacy , though in some sciences such as astronomy or geology, a predicted observation might be more appropriate. When

4235-410: Is used to summarise and analyse data, which allows scientists to assess the reliability of experimental results. In the scientific method an explanatory thought experiment or hypothesis is put forward as an explanation using parsimony principles and is expected to seek consilience  – fitting with other accepted facts related to an observation or scientific question. This tentative explanation

4356-610: The Byzantine empire and Arabic translations were done by groups such as the Nestorians and the Monophysites . Under the Caliphate , these Arabic translations were later improved and developed by Arabic scientists. By the 6th and 7th centuries, the neighbouring Sassanid Empire established the medical Academy of Gondeshapur , which is considered by Greek, Syriac, and Persian physicians as

4477-571: The Canada Act 1982 , and the Australia Act 1986 , as well as the independence of countries like India , Pakistan , South Africa , and Ireland . The First World War was a world conflict , ranging from July 1914 to the final Armistice on 11 November 1918. The Allied Powers , led by the British Empire , France , Russia until March 1918, Japan and the United States after 1917, defeated

4598-801: The Central Powers , led by the German Empire , Austro-Hungarian Empire and the Ottoman Empire . The war caused the disintegration of four empires — the Austro-Hungarian, German, Ottoman, and Russian ones — as well as radical change in the European and Middle Eastern maps. The Allied powers before 1917 are sometimes referred to as the Triple Entente , and the Central Powers are sometimes referred to as

4719-706: The Early Middle Ages (400 to 1000 CE), but in the Medieval renaissances ( Carolingian Renaissance , Ottonian Renaissance and the Renaissance of the 12th century ) scholarship flourished again. Some Greek manuscripts lost in Western Europe were preserved and expanded upon in the Middle East during the Islamic Golden Age , along with the later efforts of Byzantine Greek scholars who brought Greek manuscripts from

4840-754: The Holy Roman and Mughal Empires ceased. The Napoleonic era is a period in the history of France and Europe. It is generally classified as the fourth stage of the French Revolution , the first being the National Assembly , the second being the Legislative Assembly , and the third being the Directory . The Napoleonic era begins roughly with Napoleon's coup d'état , overthrowing the Directory and ends at

4961-525: The Hundred Days and his defeat at Waterloo ( November 9 1799 – June 28 1815 ). The Congress of Vienna soon set out to restore Europe to pre-French Revolution days. The Industrial Revolution was the major technological , socioeconomic , and cultural change in late 18th and early 19th century that began in Britain and spread throughout the world. During that time, an economy based on manual labour

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5082-599: The Proto-Italic language as * skije- or * skijo- meaning "to know", which may originate from Proto-Indo-European language as *skh 1 -ie , *skh 1 -io , meaning "to incise". The Lexikon der indogermanischen Verben proposed sciō is a back-formation of nescīre , meaning "to not know, be unfamiliar with", which may derive from Proto-Indo-European *sekH- in Latin secāre , or *skh 2 - , from *sḱʰeh2(i)- meaning "to cut". In

5203-657: The Reconquista (1492) and Christopher Columbus 's voyage to the Americas (also 1492), to the Reformation begun with Martin Luther 's Ninety-five Theses (1517). The term "modern" was coined shortly before 1585 to describe the beginning of a new era. The term "early modern" was introduced in the English language by American historians at the turn of the 20th century (around 1900). It

5324-555: The Second Industrial Revolution around 1850, when technological and economic progress gained momentum with the development of steam-powered ships and railways, and later in the nineteenth century with the internal combustion engine and electric power generation. Following the Napoleonic Wars , the British Empire became the world's leading power, controlling one-quarter of the world's population and one-third of

5445-676: The Triple Alliance . Much of the fighting in World War I took place along the Western Front , within a system of opposing manned trenches and fortifications (separated by a " no man's land ") running from the North Sea to the border of Switzerland . On the Eastern Front , the vast eastern plains and limited rail network prevented a trench warfare stalemate from developing, although the scale of

5566-522: The arts , and other aspects of culture —appear to have transformed an Old World into the Modern or New World . In each case, the identification of the change over time can be used to demarcate the old and old-fashioned from the modern. Starting in western countries, the modern world has seen a systematic re-evaluation of value systems , monarchical regimes, and feudal economic systems. These have often been replaced by democratic and liberal ideas in

5687-550: The belief in constant progress have been most recently criticized by postmodernism , while the dominance of Western Europe and North America over the rest of the world has been criticized by postcolonial theory . Eras can not easily be defined. 1500 is an approximate starting period for the modern era because many major events caused the Western world to change around that time: from the fall of Constantinople (1453), Gutenberg 's moveable type printing press (1450s), completion of

5808-555: The camera obscura and the telescope . At the start of the Renaissance, Roger Bacon , Vitello , and John Peckham each built up a scholastic ontology upon a causal chain beginning with sensation, perception, and finally apperception of the individual and universal forms of Aristotle. A model of vision later known as perspectivism was exploited and studied by the artists of the Renaissance. This theory uses only three of Aristotle's four causes: formal, material, and final. In

5929-424: The historical method , case studies , and cross-cultural studies . Moreover, if quantitative information is available, social scientists may rely on statistical approaches to better understand social relationships and processes. Formal science is an area of study that generates knowledge using formal systems . A formal system is an abstract structure used for inferring theorems from axioms according to

6050-431: The materialistic sense of having more food, clothing, and other things. In Bacon's words , "the real and legitimate goal of sciences is the endowment of human life with new inventions and riches ", and he discouraged scientists from pursuing intangible philosophical or spiritual ideas, which he believed contributed little to human happiness beyond "the fume of subtle, sublime or pleasing [speculation]". Science during

6171-467: The natural sciences (e.g., physics , chemistry , and biology ), which study the physical world ; and the behavioural sciences (e.g., economics , psychology , and sociology ), which study individuals and societies. The formal sciences (e.g., logic , mathematics, and theoretical computer science ), which study formal systems governed by axioms and rules, are sometimes described as being sciences as well; however, they are often regarded as

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6292-499: The prevention , diagnosis , and treatment of injury or disease. The applied sciences are often contrasted with the basic sciences , which are focused on advancing scientific theories and laws that explain and predict events in the natural world. Computational science applies computing power to simulate real-world situations, enabling a better understanding of scientific problems than formal mathematics alone can achieve. The use of machine learning and artificial intelligence

6413-481: The theory of impetus . His criticism served as an inspiration to medieval scholars and Galileo Galilei, who extensively cited his works ten centuries later. During late antiquity and the early Middle Ages , natural phenomena were mainly examined via the Aristotelian approach. The approach includes Aristotle's four causes : material, formal, moving, and final cause. Many Greek classical texts were preserved by

6534-406: The 13th century, medical teachers and students at Bologna began opening human bodies, leading to the first anatomy textbook based on human dissection by Mondino de Luzzi . New developments in optics played a role in the inception of the Renaissance , both by challenging long-held metaphysical ideas on perception, as well as by contributing to the improvement and development of technology such as

6655-707: The 14th century in the sense of "the state of knowing". The word was borrowed from the Anglo-Norman language as the suffix -cience , which was borrowed from the Latin word scientia , meaning "knowledge, awareness, understanding". It is a noun derivative of the Latin sciens meaning "knowing", and undisputedly derived from the Latin sciō , the present participle scīre , meaning "to know". There are many hypotheses for science ' s ultimate word origin. According to Michiel de Vaan , Dutch linguist and Indo-Europeanist , sciō may have its origin in

6776-444: The 16th century by describing and classifying plants, animals, minerals, and other biotic beings. Today, "natural history" suggests observational descriptions aimed at popular audiences. Social science is the study of human behaviour and the functioning of societies. It has many disciplines that include, but are not limited to anthropology , economics, history, human geography , political science , psychology, and sociology. In

6897-636: The 1950s and 1960s in economy, society, culture, and philosophy. These terms stem from European History; in worldwide usage, such as in China, India, and Islam, the terms are applied in a very different way, but often in the context with their contact with European culture in the Age of Discoveries . Changes, mostly seen as advances, in all areas of human activity— politics , industry , society , economics , commerce , transport , communication , mechanization , automation , science , medicine , technology , religion ,

7018-633: The 3rd millennium BCE, the ancient Egyptians developed a decimal numbering system , solved practical problems using geometry , and developed a calendar . Their healing therapies involved drug treatments and the supernatural, such as prayers, incantations , and rituals. The ancient Mesopotamians used knowledge about the properties of various natural chemicals for manufacturing pottery , faience , glass, soap, metals, lime plaster , and waterproofing. They studied animal physiology , anatomy , behaviour , and astrology for divinatory purposes. The Mesopotamians had an intense interest in medicine and

7139-482: The Allies, as did most of the rest of the world. China was in turmoil at the time and attacked Japanese armies through guerrilla-type warfare. By the beginning of 1942, the alignment of the major combatants was as follows: the British Commonwealth, the Soviet Union, and the United States were fighting Germany and Italy; China, the British Commonwealth, and the United States were fighting Japan. The United Kingdom,

7260-462: The Cold War ended and the post–Cold War era began (which includes most of the 1990s , the last decade of the 20th century). The Korean War , Vietnam War , and Soviet–Afghan War , impacted political life, while the counterculture of the 1960s and the rise of computers changed society in different, complex ways, including higher social and local mobility. At the end of the twentieth century,

7381-404: The Enlightenment was dominated by scientific societies and academies , which had largely replaced universities as centres of scientific research and development. Societies and academies were the backbones of the maturation of the scientific profession. Another important development was the popularisation of science among an increasingly literate population. Enlightenment philosophers turned to

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7502-634: The Greek natural philosophy of classical antiquity , whereby formal attempts were made to provide explanations of events in the physical world based on natural causes, while further advancements, including the introduction of the Hindu–Arabic numeral system , were made during the Golden Age of India . Scientific research deteriorated in these regions after the fall of the Western Roman Empire during

7623-410: The Greek philosopher Leucippus and his student Democritus . Later, Epicurus would develop a full natural cosmology based on atomism, and would adopt a "canon" (ruler, standard) which established physical criteria or standards of scientific truth. The Greek doctor Hippocrates established the tradition of systematic medical science and is known as " The Father of Medicine ". A turning point in

7744-453: The Milesian school, which was founded by Thales of Miletus and later continued by his successors Anaximander and Anaximenes , were the first to attempt to explain natural phenomena without relying on the supernatural . The Pythagoreans developed a complex number philosophy and contributed significantly to the development of mathematical science. The theory of atoms was developed by

7865-704: The Napoleonic Wars, which was modified by the mid-19th century's nationalistic revolutions. The results of World War I would be important factors in the development of World War II approximately 20 years later. The Interwar period was the period between the end of World War I in 1918 and the beginning of World War II in 1939. It included the Roaring Twenties , the Great Depression , and the rise of communism in Russia and fascism in Italy and Germany. World War II

7986-551: The Origin of Species , published in 1859. Separately, Gregor Mendel presented his paper, " Experiments on Plant Hybridization " in 1865, which outlined the principles of biological inheritance, serving as the basis for modern genetics. Early in the 19th century John Dalton suggested the modern atomic theory , based on Democritus's original idea of indivisible particles called atoms . The laws of conservation of energy , conservation of momentum and conservation of mass suggested

8107-559: The Pacific Ocean, and in the air over Japan. Italy surrendered in September 1943 and was split into a northern Germany-occupied puppet state and an Allies-friendly state in the south; Germany surrendered in May 1945. Following the atomic bombings of Hiroshima and Nagasaki , Japan surrendered , marking the end of the war on September 2, 1945. It is possible that around 62 million people died in

8228-504: The UK, such as the Indian Empire . All of these countries declared war on Germany in September 1939. Following the lull in fighting, known as the " Phoney War ", Germany invaded western Europe in May 1940. Six weeks later, France, in the meantime attacked by Italy as well, surrendered to Germany, which then tried unsuccessfully to conquer Britain. On September 27, Germany, Italy, and Japan signed

8349-637: The United States, the Soviet Union, and China were referred to as a "trusteeship of the powerful" during World War II and were recognized as the Allied "Big Four" in the Declaration by United Nations . These four countries were considered the " Four Policemen " or "Four Sheriffs" of the Allies and were the primary victors of World War II. Battles raged across all of Europe, in the north Atlantic Ocean , across North Africa, throughout Southeast Asia, throughout China, across

8470-472: The advent of writing systems in early civilisations like Ancient Egypt and Mesopotamia , creating the earliest written records in the history of science in around 3000 to 1200 BCE . Although the words and concepts of "science" and "nature" were not part of the conceptual landscape at the time, the ancient Egyptians and Mesopotamians made contributions that would later find a place in Greek and medieval science: mathematics, astronomy, and medicine. From

8591-527: The areas of politics , science , psychology , sociology , and economics . Some events of modern history, though born out of context not entirely new, show a new way of perceiving the world. The concept of modernity interprets the general meaning of these events and seeks explanations for major developments. Historians analyze the events taking place in Modern Times, since the so-called " Middle Ages " (between Modern and Ancient Times ). The " Baroque "

8712-398: The combination of two or more disciplines into one, such as bioinformatics , a combination of biology and computer science or cognitive sciences . The concept has existed since the ancient Greek period and it became popular again in the 20th century. Scientific research can be labelled as either basic or applied research. Basic research is the search for knowledge and applied research

8833-399: The conflict was just as large. Hostilities also occurred on and under the sea and — for the first time — from the air. More than 9 million soldiers died on the various battlefields, and nearly that many more in the participating countries' home fronts on account of food shortages and genocide committed under the cover of various civil wars and internal conflicts. Notably, more people died of

8954-610: The course of tens of thousands of years, taking different forms around the world, and few details are known about the very earliest developments. Women likely played a central role in prehistoric science, as did religious rituals . Some scholars use the term " protoscience " to label activities in the past that resemble modern science in some but not all features; however, this label has also been criticised as denigrating, or too suggestive of presentism , thinking about those activities only in relation to modern categories. Direct evidence for scientific processes becomes clearer with

9075-679: The dawning of the Information Age . Major political developments included the Israeli–Palestinian conflict , two world wars, and the Cold War . It also saw the former British Empire lose most of its remaining political power over Commonwealth countries, most notably by the dividing of the British crown into several sovereignties by the Statute of Westminster , the patriation of constitutions by

9196-421: The development of nuclear weapons. The fear existed that not only were terrorists already attempting to obtain nuclear weapons, but that they had already acquired them. Science Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. Modern science is typically divided into two or three major branches:

9317-505: The discovery of radioactivity by Henri Becquerel and Marie Curie in 1896, Marie Curie then became the first person to win two Nobel Prizes . In the next year came the discovery of the first subatomic particle, the electron . In the first half of the century the development of antibiotics and artificial fertilisers improved human living standards globally. Harmful environmental issues such as ozone depletion , ocean acidification , eutrophication , and climate change came to

9438-538: The dramatic increases in production capacity. The development of all-metal machine tools in the first two decades of the 19th century facilitated the manufacture of more production machines for manufacturing in other industries. The date of the Industrial Revolution is not exact. Eric Hobsbawm held that it "broke out" in the 1780s and was not fully felt until the 1830s or 1840s, while T. S. Ashton held that it occurred roughly between 1760 and 1830 (in effect

9559-517: The dying Byzantine Empire to Western Europe at the start of the Renaissance . The recovery and assimilation of Greek works and Islamic inquiries into Western Europe from the 10th to 13th century revived " natural philosophy ", which was later transformed by the Scientific Revolution that began in the 16th century as new ideas and discoveries departed from previous Greek conceptions and traditions. The scientific method soon played

9680-584: The earliest medical prescriptions appeared in Sumerian during the Third Dynasty of Ur . They seem to have studied scientific subjects which had practical or religious applications and had little interest in satisfying curiosity. In classical antiquity , there is no real ancient analogue of a modern scientist. Instead, well-educated, usually upper-class, and almost universally male individuals performed various investigations into nature whenever they could afford

9801-478: The fighting was confined to Poland. Pursuant to a then-secret provision of its non-aggression Molotov–Ribbentrop Pact , the Soviet Union joined Germany on September 17, 1939, to conquer Poland and divide Eastern Europe. The Allies were initially made up of Poland, the United Kingdom, France, Australia, Canada, New Zealand, South Africa, as well as British Commonwealth countries which were controlled directly by

9922-462: The free energy of the universe is seen as constantly declining: the entropy of a closed universe increases over time. The electromagnetic theory was established in the 19th century by the works of Hans Christian Ørsted , André-Marie Ampère , Michael Faraday , James Clerk Maxwell , Oliver Heaviside , and Heinrich Hertz . The new theory raised questions that could not easily be answered using Newton's framework. The discovery of X-rays inspired

10043-425: The frequent use of precision instruments; the emergence of terms such as "biologist", "physicist", and "scientist"; an increased professionalisation of those studying nature; scientists gaining cultural authority over many dimensions of society; the industrialisation of numerous countries; the thriving of popular science writings; and the emergence of science journals. During the late 19th century, psychology emerged as

10164-519: The genes of the human genome . The first induced pluripotent human stem cells were made in 2006, allowing adult cells to be transformed into stem cells and turn into any cell type found in the body. With the affirmation of the Higgs boson discovery in 2013, the last particle predicted by the Standard Model of particle physics was found. In 2015, gravitational waves , predicted by general relativity

10285-504: The gutter between pages. The concluding index gives the latitude and longitude of the places named. Modern history The modern period has been a period of significant development in the fields of science , politics , warfare , and technology . It has also been an Age of Discovery and globalization . During this time, the European powers and later their colonies, strengthened its political, economic, and cultural colonization of

10406-431: The heliocentric model. The printing press was widely used to publish scholarly arguments, including some that disagreed widely with contemporary ideas of nature. Francis Bacon and René Descartes published philosophical arguments in favour of a new type of non-Aristotelian science. Bacon emphasised the importance of experiment over contemplation, questioned the Aristotelian concepts of formal and final cause, promoted

10527-562: The history of early philosophical science was Socrates ' example of applying philosophy to the study of human matters, including human nature, the nature of political communities, and human knowledge itself. The Socratic method as documented by Plato 's dialogues is a dialectic method of hypothesis elimination: better hypotheses are found by steadily identifying and eliminating those that lead to contradictions. The Socratic method searches for general commonly-held truths that shape beliefs and scrutinises them for consistency. Socrates criticised

10648-509: The idea that science should study the laws of nature and the improvement of all human life. Descartes emphasised individual thought and argued that mathematics rather than geometry should be used to study nature. At the start of the Age of Enlightenment , Isaac Newton formed the foundation of classical mechanics by his Philosophiæ Naturalis Principia Mathematica , greatly influencing future physicists. Gottfried Wilhelm Leibniz incorporated terms from Aristotelian physics , now used in

10769-502: The land area. It enforced a Pax Britannica , encouraged trade, and battled rampant piracy. Slavery was greatly reduced around the world. Following a successful slave revolt in Haiti , Britain forced the Barbary pirates to halt their practice of kidnapping and enslaving Europeans, banned slavery throughout its domain in 1833, and charged its navy with ending the global slave trade. Slavery

10890-514: The last of them being an historical atlas which appeared in 1912. The period covered was from 1450 to 1910. Each volume includes an extensive bibliography. A second series, with entirely new editors and contributors, The New Cambridge Modern History , appeared in fourteen volumes between 1957 and 1979, again concluding with an atlas. It covered the world from 1450 to 1945. The first discussions about creating The Cambridge Modern History took place in 1896. The original Cambridge Modern History

11011-509: The late 20th century active recruitment of women and elimination of sex discrimination greatly increased the number of women scientists, but large gender disparities remained in some fields. The discovery of the cosmic microwave background in 1964 led to a rejection of the steady-state model of the universe in favour of the Big Bang theory of Georges Lemaître . The century saw fundamental changes within science disciplines. Evolution became

11132-402: The maps, written by Ernest Alfred Benians . It is divided into several sections: Except for the first, each is in turn subsectioned for Europe and "Greater Europe", with the latter term referring mostly to the colonial empires. A separate index is provided for the introduction. There are 141 maps in this volume. Two-page maps are bound in such a way as to prevent information from being lost in

11253-608: The most important medical center of the ancient world. The House of Wisdom was established in Abbasid -era Baghdad , Iraq , where the Islamic study of Aristotelianism flourished until the Mongol invasions in the 13th century. Ibn al-Haytham , better known as Alhazen, used controlled experiments in his optical study. Avicenna 's compilation of the Canon of Medicine , a medical encyclopaedia,

11374-662: The notion that the only function of the eye is perception, and shifted the main focus in optics from the eye to the propagation of light. Kepler is best known, however, for improving Copernicus' heliocentric model through the discovery of Kepler's laws of planetary motion . Kepler did not reject Aristotelian metaphysics and described his work as a search for the Harmony of the Spheres . Galileo had made significant contributions to astronomy, physics and engineering. However, he became persecuted after Pope Urban VIII sentenced him for writing about

11495-447: The older type of study of physics as too purely speculative and lacking in self-criticism . Aristotle in the 4th century BCE created a systematic program of teleological philosophy. In the 3rd century BCE, Greek astronomer Aristarchus of Samos was the first to propose a heliocentric model of the universe, with the Sun at the centre and all the planets orbiting it. Aristarchus's model

11616-598: The past, science was a synonym for "knowledge" or "study", in keeping with its Latin origin. A person who conducted scientific research was called a "natural philosopher" or "man of science". In 1834, William Whewell introduced the term scientist in a review of Mary Somerville 's book On the Connexion of the Physical Sciences , crediting it to "some ingenious gentleman" (possibly himself). Science has no single origin. Rather, systematic methods emerged gradually over

11737-512: The public's attention and caused the onset of environmental studies . During this period scientific experimentation became increasingly larger in scale and funding . The extensive technological innovation stimulated by World War I , World War II , and the Cold War led to competitions between global powers , such as the Space Race and nuclear arms race . Substantial international collaborations were also made, despite armed conflicts. In

11858-491: The reigns of George III , The Regency , and George IV ). The effects spread throughout Western Europe and North America during the 19th century, eventually affecting the majority of the world. The impact of this change on society was enormous and is often compared to the Neolithic Revolution , when mankind developed agriculture and gave up its nomadic lifestyle. The First Industrial Revolution gave way to

11979-437: The rest of the world. It also created a new modern lifestyle and has permanently changed the way people around the world live. In the 19th and early 20th century , modernist art , politics , science , and culture have come to dominate not only Western Europe and North America , but almost every area on the globe, including movements thought of as opposed to the western world and globalization . The modern era

12100-453: The seminal encyclopaedia Natural History . Positional notation for representing numbers likely emerged between the 3rd and 5th centuries CE along Indian trade routes. This numeral system made efficient arithmetic operations more accessible and would eventually become standard for mathematics worldwide. Due to the collapse of the Western Roman Empire , the 5th century saw an intellectual decline and knowledge of Greek conceptions of

12221-567: The sixteenth century Nicolaus Copernicus formulated a heliocentric model of the Solar System, stating that the planets revolve around the Sun, instead of the geocentric model where the planets and the Sun revolve around the Earth. This was based on a theorem that the orbital periods of the planets are longer as their orbs are farther from the centre of motion, which he found not to agree with Ptolemy's model. Johannes Kepler and others challenged

12342-405: The social sciences, there are many competing theoretical perspectives, many of which are extended through competing research programs such as the functionalists , conflict theorists , and interactionists in sociology. Due to the limitations of conducting controlled experiments involving large groups of individuals or complex situations, social scientists may adopt other research methods such as

12463-533: The term permeated all areas of professional activity from textbooks and graduate school seminars to conferences, research articles, and job descriptions.' The difference between "early modern" and just "modern" was defined by the French Revolution and the Industrial Revolution . Sometimes distinct from the modern periods themselves, the terms " modernity " and " modernism " refer to a new way of thinking, distinct, from previous ways of thinking such as medieval thinking. The European Renaissance (about 1420–1630)

12584-476: The time. Before the invention or discovery of the concept of phusis or nature by the pre-Socratic philosophers , the same words tend to be used to describe the natural "way" in which a plant grows, and the "way" in which, for example, one tribe worships a particular god. For this reason, it is claimed that these men were the first philosophers in the strict sense and the first to clearly distinguish "nature" and "convention". The early Greek philosophers of

12705-606: The war ; estimates vary greatly. About 60% of all casualties were civilians, who died as a result of disease, starvation, genocide (in particular, the Holocaust ), and aerial bombing. The former Soviet Union and China suffered the most casualties. Estimates place deaths in the Soviet Union at around 23 million, while China suffered about 10 million. No country lost a greater portion of its population than Poland: approximately 5.6 million, or 16%, of its pre-war population of 34.8 million died. The Holocaust (which roughly means "burnt whole")

12826-479: The war, eventually resulting in the establishment of the People's Republic of China . The former colonies of the European powers began their road to independence. The Cold War between the "West" (the United States, Western Europe, and Japan) and the "East" (the Soviet Union, Eastern Europe, and China) dominated politics from the end of World War II in 1945, until the collapse of the Soviet Union in 1991, at which point

12947-476: The world deteriorated in Western Europe. During the period, Latin encyclopaedists such as Isidore of Seville preserved the majority of general ancient knowledge. In contrast, because the Byzantine Empire resisted attacks from invaders, they were able to preserve and improve prior learning. John Philoponus , a Byzantine scholar in the 500s, started to question Aristotle's teaching of physics, introducing

13068-506: The world was at a major crossroads. Throughout the century, more technological advances had been made than in all of preceding history. Computers, the Internet, and other technologies radically altered daily lives. However, several problems faced the world during the Cold War period and the 1990s that followed. First of all, the gap between rich and poor nations continued to widen. Some said that this problem could not be fixed, arguing that there

13189-433: The world. Viruses such as West Nile and Avian influenza continued to spread quickly and easily. In poor nations, malaria and other diseases affected the majority of the population. Millions were infected with HIV , the virus that causes AIDS , which was becoming an epidemic in southern Africa and around the world. Increased globalization , specifically Americanization , was also occurring. While not necessarily

13310-440: The worldwide influenza outbreak at the end of the war and shortly after than died in the hostilities. The unsanitary conditions engendered by the war, severe overcrowding in barracks, wartime propaganda interfering with public health warnings, and migration of so many soldiers around the world helped the outbreak become a pandemic . Ultimately, World War I created a decisive break with the old world order that had emerged after

13431-484: Was a global military conflict that took place in 1939–1945. It was the largest and deadliest war in history, culminating in The Holocaust and ending with the dropping of the atom bomb . Although Japan had invaded China in 1937, the conventional view is that World War II began on September 1, 1939, when Nazi Germany invaded Poland. Within two days, the United Kingdom and France declared war on Germany, even though

13552-530: Was a set amount of wealth and it could only be shared by so many. Others claimed that powerful nations with large economies were not doing enough to help improve the rapidly evolving economies of the Third World . Developing countries faced many challenges, including the scale of the task to be surmounted, rapidly growing populations, and the need to protect the environment, along with the associated costs. Secondly, disease threatened to destabilize many regions of

13673-511: Was informally split into Western and Soviet spheres of influence . Western Europe later aligned as NATO , and Eastern Europe as the Warsaw Pact . There was a shift in power from Western Europe and the British Empire to the two new superpowers, the United States and the Soviet Union. These two rivals would later face off in the Cold War . In Asia, the defeat of Japan led to its democratization . China's civil war continued through and after

13794-588: Was later followed by similar multi-volume works for the earlier ages, namely the Cambridge Ancient History and the Cambridge Medieval History . As the first of such histories, it later came to be seen as establishing a tradition of collaborative scholarship. A second edition of the atlas (volume XIV) was published in 1924. Scanned full text here ( Archive.org ) This volume includes This volume begins with an extensive introduction to

13915-463: Was long thought that the concept was invented either in the 1930s to distinguish the time between the Middle Ages and time of the late Enlightenment (1800), or that "early modern" was not coined until the mid-20th century and only gained substantial traction in the 1960s and 1970s. Nipperdey (2022) pointed to its widespread usage by American historians around 1900 already, adding: 'In the interwar years

14036-473: Was planned by Lord Acton , who during 1899 and 1900 gave much of his time to coordinating the project, intended to be a monument of objective, detailed, and collaborative scholarship. Acton was Regius professor of modern history at Cambridge , and a fellow of All Souls , Oxford . He had previously established the English Historical Review in 1886 and had an exalted reputation. The new work

14157-493: Was published in fourteen volumes between 1902 and 1912, in the British Isles by the Cambridge University Press and in the United States by Macmillan & Co. of New York City . Written mostly by English scholars, the first twelve volumes dealt with the history of the world from 1450 up to 1870. The final volume, numbered 12, was The Latest Age and appeared in 1910. There then followed two supplemental volumes. The history

14278-426: Was replaced by one dominated by industry and the manufacture of machinery . It began with the mechanisation of the textile industries and the development of iron -making techniques, and trade expansion was enabled by the introduction of canals , improved roads , and then railways . The introduction of steam power (fuelled primarily by coal ) and powered machinery (mainly in textile manufacturing ) underpinned

14399-639: Was the deliberate and systematic murder of millions of Jews and other "unwanted" groups during World War II by the Nazi regime in Germany. Several differing views exist regarding whether it was intended to occur from the war's beginning or if the plans for it came about later. Regardless, persecution of Jews extended well before the war even started, such as during Kristallnacht (Night of Broken Glass). The Nazis used propaganda to great effect to stir up anti-Semitic feelings within ordinary Germans. After World War II, Europe

14520-720: Was then abolished in Russia in 1861, by the Emancipation Proclamation in the United States in 1863, and in Brazil in 1888. (see Abolitionism ). Following the abolition of the slave trade , and propelled by economic exploitation, the Scramble for Africa was initiated formally at the Berlin West Africa Conference in 1884–1885. All the major European powers laid claim to the areas of Africa where they could exhibit

14641-501: Was widely rejected because it was believed to violate the laws of physics, while Ptolemy's Almagest , which contains a geocentric description of the Solar System , was accepted through the early Renaissance instead. The inventor and mathematician Archimedes of Syracuse made major contributions to the beginnings of calculus . Pliny the Elder was a Roman writer and polymath, who wrote

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