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100-606: With a capacity of more than 2,000 beds and visited by more than three million patients per year Siriraj is one of the largest and busiest medical centers in Southeast Asia . The medical school accepts about 250 medical students and more than 100 for postgraduate residency training each year. Siriraj is the largest public hospital in Thailand. The hospital is generally regarded as one of the final referral centers for complicated and rare diseases from all hospitals in Thailand. The logo of

200-485: A meridian (a great circle passing through the two poles). The IUGG standard meridian is, to the nearest millimetre, 40,007.862917 kilometres (24,859.733480 mi), one arc-minute of which is 1,852.216 metres (6,076.82 ft), explaining the SI standardization of the nautical mile as 1,852 metres (6,076 ft), more than 3 metres (9.8 ft) less than the geographical mile . The sea-level surface of Earth (the geoid )

300-449: A Chinese Ming emperor sent a princess, Hang Li Po , to Malacca, with a retinue of 500, to marry Sultan Mansur Shah after the emperor was impressed by the wisdom of the sultan. Hang Li Poh's Well (constructed 1459) is now a tourist attraction there, as is Bukit Cina , where her retinue settled. The strategic value of the Strait of Malacca , which was controlled by Sultanate of Malacca in

400-622: A dominant maritime power of Indian subcontinent, in 1025. The invasion reshaped power and trade in the region, resulted in the rise of new regional powers such as the Khmer Empire and Kahuripan . Continued commercial contacts with the Chinese Empire enabled the Cholas to influence the local cultures. Many of the surviving examples of the Hindu cultural influence found today throughout Southeast Asia are

500-756: A framework for the integration of commerce and regional responses to international concerns. China has asserted broad claims over the South China Sea , based on its nine-dash line , and has built artificial islands in an attempt to bolster its claims. China also has asserted an exclusive economic zone based on the Spratly Islands . The Philippines challenged China in the Permanent Court of Arbitration in The Hague in 2013, and in Philippines v. China (2016),

600-513: A new local power emerged. Myinsaing Kingdom became the real ruler of Central Burma and challenged the Mongol rule. This resulted in the second Mongol invasion of Burma in 1300, which was repulsed by Myinsaing. The Mongols would later in 1303 withdrawn from Burma. In 1292, The Mongols sent envoys to Singhasari Kingdom in Java to ask for submission to Mongol rule. Singhasari rejected the proposal and injured

700-550: A part of Southeast Asia because of its cultural and religious ties to Mainland Southeast Asia. The eastern half of the island of New Guinea , which is not a part of Indonesia, namely, Papua New Guinea, is sometimes included as a part of Maritime Southeast Asia, and so are Guam , the Northern Mariana Islands , and Palau , which were all parts of the Spanish East Indies with strong cultural and linguistic ties to

800-496: A person on Earth, the Sun appears to travel along the equator (or along the celestial equator) at these times. Locations on the equator experience the shortest sunrises and sunsets because the Sun's daily path is nearly perpendicular to the horizon for most of the year. The length of daylight (sunrise to sunset) is almost constant throughout the year; it is about 14 minutes longer than nighttime due to atmospheric refraction and

900-553: A result of famine and forced labour during the Japanese occupation. The Allied powers who then defeated Japan (and other allies of Axis ) in the South-East Asian theatre of World War II then contended with nationalists to whom the occupation authorities had granted independence. Gujarat , India had a flourishing trade relationship with Southeast Asia in the 15th and 16th centuries. The trade relationship with Gujarat declined after

1000-451: Is a standard for use in cartography, geodesy, and satellite navigation including GPS , also has an equatorial radius of 6,378.137 km (3,963.191 mi). For both GRS 80 and WGS 84, this results in a length for the Equator of 40,075.0167 km (24,901.4609 mi). The geographical mile is defined as one arc-minute of the Equator, so it has different values depending on which radius

1100-406: Is assumed. For example, by WSG-84, the distance is 1,855.3248 metres (6,087.024 ft), while by IAU-2000, it is 1,855.3257 metres (6,087.027 ft). This is a difference of less than one millimetre (0.039 in) over the total distance (approximately 1.86 kilometres or 1.16 miles). Earth is commonly modeled as a sphere flattened 0.336% along its axis. This makes the Equator 0.16% longer than

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1200-424: Is defined to be 0°. It is an imaginary line on the spheroid, equidistant from its poles , dividing it into northern and southern hemispheres. In other words, it is the intersection of the spheroid with the plane perpendicular to its axis of rotation and midway between its geographical poles . On and near the Equator (on Earth), noontime sunlight appears almost directly overhead (no more than about 23° from

1300-490: Is evident in the Arab-Indonesian, Arab-Singaporean, and Arab-Malay populations who were at one time very prominent in each of their countries. Finally, the ruling classes embraced Islam and that further aided the permeation of the religion throughout the region. The ruler of the region's most important port, Malacca Sultanate , embraced Islam in the 15th century, heralding a period of accelerated conversion of Islam throughout

1400-604: Is geographically divided into two subregions, namely Mainland Southeast Asia (or the Indochinese Peninsula) and Maritime Southeast Asia . Mainland Southeast Asia includes : Maritime Southeast Asia includes : While Peninsular Malaysia is geographically situated in Mainland Southeast Asia, it shares many similar cultural and ecological affinities with surrounding islands, thus it is often grouped with them as part of Maritime Southeast Asia. Geographically,

1500-600: Is intimately related to a Chinese Muslim, Admiral Zheng He ." There are several theories to the Islamization process in Southeast Asia. Another theory is trade. The expansion of trade among West Asia, India, and Southeast Asia helped the spread of the religion as Muslim traders from South Arabia ( Hadhramaut ) brought Islam to the region with their large volume of trade. Many settled in Indonesia, Singapore, and Malaysia. This

1600-458: Is irregular, so the actual length of the Equator is not so easy to determine. Aviation Week and Space Technology on 9 October 1961 reported that measurements using the Transit IV-A satellite had shown the equatorial diameter from longitude 11° West to 169° East to be 1,000 feet (305 m) greater than its diameter ninety degrees away. Download coordinates as: The Equator passes through

1700-609: Is more than 675 million, about 8.5% of the world's population. It is the third most populous geographical region in Asia after South Asia and East Asia. The region is culturally and ethnically diverse, with hundreds of languages spoken by different ethnic groups. Ten countries in the region are members of the Association of Southeast Asian Nations (ASEAN), a regional organisation established for economic, political, military, educational, and cultural integration among its members. Southeast Asia

1800-463: Is one of the most culturally diverse regions of the world. There are many different languages and ethnicities in the region. Historically, Southeast Asia was significantly influenced by Indian , Chinese , Muslim , and colonial cultures, which became core components of the region's cultural and political institutions. Most modern Southeast Asian countries were colonised by European powers. European colonisation exploited natural resources and labour from

1900-557: Is perpendicular to the Earth's rotation axis , which drifts about 9 metres (30 ft) during a year. Geological samples show that the Equator significantly changed positions between 48 and 12 million years ago, as sediment deposited by ocean thermal currents at the Equator shifted. The deposits by thermal currents are determined by the axis of Earth, which determines solar coverage of Earth's surface . Changes in Earth's axis can also be observed in

2000-640: Is politically represented through the Pacific Islands Forum , a governing body which, up until 2022, included Australia, New Zealand and all independent territories in Melanesia , Micronesia, and Polynesia . Several countries of Maritime Southeast Asia, such as Indonesia and the Philippines, are dialogue partners of the Pacific Islands Forum, but none have full membership. Maritime Southeast Asia

2100-685: Is the main plate of the region, featuring almost all Southeast Asian countries except Myanmar , northern Thailand , northern Laos , northern Vietnam , and northern Luzon of the Philippines , while the Sunda Plate only includes western Indonesia to as far east as the Indonesian province of Bali . The mountain ranges in Myanmar, Thailand, Peninsular Malaysia , and the Indonesian islands of Sumatra , Java , Bali , Lesser Sunda Islands , and Timor are part of

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2200-647: Is the only country where its folk religion makes up the plurality. Recently, Vietnamese folk religion is undergoing a revival with the support of the government. Elsewhere, there are ethnic groups in Southeast Asia that resisted conversion and still retain their original animist beliefs, such as the Dayaks in Kalimantan , the Igorots in Luzon, and the Shans in eastern Myanmar. After

2300-525: Is the only other subregion of Asia that lies partly within the Southern Hemisphere . Mainland Southeast Asia is entirely in the Northern Hemisphere . East Timor and the southern portion of Indonesia are the parts of Southeast Asia that lie south of the equator . The region lies near the intersection of geological plates , with both heavy seismic and volcanic activities. The Sunda Plate

2400-429: Is tilted towards or away from the sun, resulting in either summer or winter in both hemispheres. This also results in a corresponding movement of the equator away from the subsolar point, which is then situated over or near the relevant tropic circle . Nevertheless, temperatures are high year-round due to the Earth's axial tilt of 23.5° not being enough to create a low minimum midday declination to sufficiently weaken

2500-565: The Alpide belt , while the islands of the Philippines and Indonesia as well as East Timor are part of the Pacific Ring of Fire . Both seismic belts meet in Indonesia, causing the region to have relatively high occurrences of earthquakes and volcanic eruptions, particularly in the Philippines and Indonesia . It covers about 4,500,000 km (1,700,000 sq mi), which is 8% of Eurasia and 3% of Earth's total land area. Its total population

2600-725: The Andaman and Nicobar Islands of India is also considered a part of Maritime Southeast Asia. Eastern Bangladesh and Northeast India have strong cultural ties with Mainland Southeast Asia and are sometimes considered transregional areas between South Asia and Southeast Asia. To the east, Hong Kong is sometimes regarded as part of Southeast Asia. Similarly, Christmas Island and the Cocos (Keeling) Islands have strong cultural ties with Maritime Southeast Asia and are sometimes considered transregional areas between Southeast Asia and Australia/Oceania. On some occasions, Sri Lanka has been considered

2700-782: The Australian mainland , which is part of Oceania . Southeast Asia is bordered to the north by East Asia , to the west by South Asia and the Bay of Bengal , to the east by Oceania and the Pacific Ocean , and to the south by Australia and the Indian Ocean . Apart from the British Indian Ocean Territory and two out of 26 atolls of the Maldives in South Asia, Maritime Southeast Asia

2800-620: The Austronesian peoples , who form the majority of the modern population in Brunei, Indonesia, East Timor, Malaysia, and the Philippines, migrated to Southeast Asia from Taiwan in the first seaborne human migration known as the Austronesian Expansion . They arrived in the northern Philippines between 7,000 BC to 2,200 BC and rapidly spread further into the Northern Mariana Islands and Borneo by 1500 BC; Island Melanesia by 1300 BC; and to

2900-698: The Cocos (Keeling) Islands are located on the Australian Plate , south of the Sunda Trench . Even though they are geographically closer to Maritime Southeast Asia than mainland Australia , these two Australian external territories are not geologically associated with Asia as none of them is actually on the Sunda Plate . The UN Statistics Division 's geoscheme , which is a UN political geography tool created specifically for statistical purposes, has classified both island territories as parts of Oceania , under

3000-576: The East Indies or simply the Indies until the 20th century. Chinese sources referred to the region as Nanyang (" 南洋 "), which literally means the "Southern Ocean". The mainland section of Southeast Asia was referred to as Indochina by European geographers due to its location between China and the Indian subcontinent and its having cultural influences from both neighbouring regions. In the 20th century, however,

3100-531: The Indonesian region of Western New Guinea (Papua and West Papua ). Both countries share the island of New Guinea . Islands to the east of the Philippines make up the region of Micronesia . These islands are not biogeographically, geologically or historically linked to mainland Asia, and are considered part of Oceania by the United Nations , The World Factbook , and other organisations. The Oceania region

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3200-572: The Srivijaya kingdom of Sangrama Vijayatungavarman in Kadaram ( Kedah ); the capital of the powerful maritime kingdom was sacked and the king was taken captive. Along with Kadaram, Pannai in present-day Sumatra and Malaiyur and the Malayan peninsula were attacked too. Soon after that, the king of Kedah Phra Ong Mahawangsa became the first ruler to abandon the traditional Hindu faith, and converted to Islam with

3300-538: The Sultanate of Kedah established in 1136. Samudera Pasai converted to Islam in 1267, the King of Malacca Parameswara married the princess of Pasai, and the son became the first sultan of Malacca. Soon, Malacca became the center of Islamic study and maritime trade, and other rulers followed suit. Indonesian religious leader and Islamic scholar Hamka (1908–1981) wrote in 1961: "The development of Islam in Indonesia and Malaya

3400-520: The Tropic of Capricorn ). The equator is the only line of latitude which is also a great circle —meaning, one whose plane passes through the center of the globe. The plane of Earth's equator, when projected outwards to the celestial sphere , defines the celestial equator . In the cycle of Earth's seasons , the equatorial plane runs through the Sun twice a year : on the equinoxes in March and September . To

3500-516: The UNSD subregion "Australia and New Zealand" ( Australasia ). Some definitions of Southeast Asia may include Taiwan . Taiwan has sometimes been included in Southeast Asia as well as East Asia but is not a member of ASEAN . Likewise, a similar argument could be applied to some southern parts of mainland China , as well as Hong Kong and Macau , may also considered as part of Southeast Asia as well as East Asia but are not members of ASEAN . The region

3600-439: The zenith ) every day, year-round. Consequently, the Equator has a rather stable daytime temperature throughout the year. On the equinoxes (approximately March 20 and September 23) the subsolar point crosses Earth's equator at a shallow angle, sunlight shines perpendicular to Earth's axis of rotation, and all latitudes have nearly a 12-hour day and 12-hour night. The name is derived from medieval Latin word aequator , in

3700-618: The 15th and early 16th century, did not go unnoticed by Portuguese writer Tomé Pires , who wrote in the Suma Oriental : "Whoever is lord of Malacca has his hand on the throat of Venice ." (Venice was a major European trading partner, and goods were transported there via the Straight.) Western influence started to enter in the 16th century, with the arrival of the Portuguese in Malacca, Maluku , and

3800-504: The Bangkok Noi area where the museum and the hospital are situated. 13°45′29″N 100°29′09″E  /  13.757925°N 100.485849°E  / 13.757925; 100.485849 Southeast Asia Southeast Asia is the geographical southeastern region of Asia , consisting of the regions that are situated south of China , east of the Indian subcontinent , and northwest of

3900-770: The Court ruled in favour of the Philippines and rejected China's claims. Indonesia is the largest country in Southeast Asia and is also the largest archipelago in the world by size (according to the CIA World Factbook ). Geologically, the Indonesian Archipelago is one of the most volcanically active regions in the world. Geological uplifts in the region have also produced some impressive mountains, culminating in Puncak Jaya in Papua , Indonesia at 5,030 metres (16,503 feet), on

4000-472: The Equator is an imaginary line located at 0 degrees latitude , about 40,075 km (24,901 mi) in circumference, halfway between the North and South poles. The term can also be used for any other celestial body that is roughly spherical. In spatial (3D) geometry , as applied in astronomy , the equator of a rotating spheroid (such as a planet ) is the parallel (circle of latitude) at which latitude

4100-488: The Equator. However, its island of Annobón is 155 km (96 mi) south of the Equator, and the rest of the country lies to the north. France , Norway ( Bouvet Island ), and the United Kingdom are the other three Northern Hemisphere -based countries which have territories in the Southern Hemisphere . Seasons result from the tilt of Earth's axis away from a line perpendicular to the plane of its revolution around

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4200-686: The IAU 2009 value). This equatorial radius is also in the 2003 and 2010 IERS Conventions. It is also the equatorial radius used for the IERS 2003 ellipsoid. If it were really circular, the length of the equator would then be exactly 2π times the radius, namely 40,075.0142 km (24,901.4594 mi). The GRS 80 (Geodetic Reference System 1980) as approved and adopted by the IUGG at its Canberra, Australia meeting of 1979 has an equatorial radius of 6,378.137 km (3,963.191 mi). The WGS 84 (World Geodetic System 1984) which

4300-537: The Indian Ocean aided the colonisation of Madagascar, as well as commerce between Western Asia, eastern coast of India and Chinese southern coast. Gold from Sumatra is thought to have reached as far west as Rome. Pliny the Elder wrote in his Natural History about Chryse and Argyre , two legendary islands rich in gold and silver, located in the Indian Ocean. Their vessels, such as the vinta , were capable to sail across

4400-571: The Mongols tried to invade Đại Việt and Champa . The invasions were unsuccessful, yet both Dai Viet and Champa agreed to become tributary states to Yuan dynasty to avoid further conflicts. The Mongols also invaded Pagan Kingdom in Burma from 1277 to 1287, resulted in fragmentation of the Kingdom and rise of smaller Shan States ruled by local chieftains nominally submitted to Yuan dynasty. However, in 1297,

4500-545: The Papuan-related and East Asian-related branches of the Eastern non-African lineage. The hunter-gatherer individual had approximately ~50% "Basal-East Asian" ancestry, and was positioned in between modern East Asians and Papuans of Oceania. The authors concluded that East Asian-related ancestry expanded from Mainland Southeast Asia into Maritime Southeast Asia much earlier than previously suggested, as early as 25,000BC, long before

4600-425: The Philippines, the latter being settled by the Spaniards years later, which they used to trade between Asia and Latin America . Throughout the 17th and 18th centuries, the Dutch established the Dutch East Indies ; the French Indochina ; and the British Strait Settlements . By the 19th century, all Southeast Asian countries were colonised except for Thailand . European explorers were reaching Southeast Asia from

4700-493: The Portuguese invasion of Southeast Asia in the 17th century. The United States took the Philippines from Spain in 1898. Internal autonomy was granted in 1934, and independence in 1946. Most countries in the region maintain national autonomy. Democratic forms of government are practised in most Southeast Asian countries and human rights is recognised but dependent on each nation state. Socialist or communist countries in Southeast Asia include Vietnam and Laos. ASEAN provides

4800-405: The Siriraj Hospital is the Naga curled into a shape of "ศ" (pronounce as "Sor-Sala"), the first Thai alphabet of the hospital name with the Royal Diadem on top of the Naga. The hospital was founded by King Chulalongkorn in 1888, two years after a worldwide cholera outbreak. It is named after the king's 18-month-old son, Prince Siriraj Kakudhabhand , who had died from dysentery a year before

4900-426: The South China Sea. Mayon Volcano , despite being dangerously active , holds the record of the world's most perfect cone which is built from past and continuous eruption . Geographically, Southeast Asia is bounded to the southeast by the Australian continent , the boundary between these two regions is most often considered to run through Wallacea . Geopolitically, the boundary lies between Papua New Guinea and

5000-513: The Sun's rays even during the solstices. High year-round temperatures extend to about 25° north or south of the equator, although the moderate seasonal temperature difference is defined by the opposing solstices (as it is at higher latitudes) near the poleward limits of this range. Near the equator, there is little temperature change throughout the year, though there may be dramatic differences in rainfall and humidity. The terms summer, autumn, winter and spring do not generally apply. Lowlands around

5100-489: The Sun. Throughout the year, the Northern and Southern hemispheres are alternately turned either toward or away from the Sun, depending on Earth's position in its orbit. The hemisphere turned toward the Sun receives more sunlight and is in summer, while the other hemisphere receives less sun and is in winter (see solstice ). At the equinoxes , Earth's axis is perpendicular to the Sun rather than tilted toward or away, meaning that day and night are both about 12 hours long across

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5200-426: The afternoon and 23 °C (73 °F) around sunrise. Rainfall is very high away from cold ocean current upwelling zones, from 2,500 to 3,500 mm (100 to 140 in) per year. There are about 200 rainy days per year and average annual sunshine hours are around 2,000. Despite high year-round sea level temperatures, some higher altitudes such as the Andes and Mount Kilimanjaro have glaciers. The highest point on

5300-516: The age of 88. There are seven medical museums at Siriraj Hospital. They are the Siriraj Bimuksthan Museum, Ellis Pathological Museum, Congdons Anatomical Museum, Songkran Niyomsan Forensic Medicine Museum, Parasitological Museum, Touch Museum in Honor of Queen Mother Sirikit, and Sood Sangvichien Prehistoric Museum Laboratory. The permanent exhibits include sections on anatomy , pathology , congenital disorders , toxicology , techniques of Thai traditional medicine , and forensic pathology . In 2008,

5400-438: The caves of Borneo . Homo floresiensis also lived in the area up until at least 50,000 years ago, after which they became extinct. During much of this time the present-day islands of western Indonesia were joined into a single landmass known as Sundaland due to lower sea levels. Ancient remains of hunter-gatherers in Maritime Southeast Asia, such as one Holocene hunter-gatherer from South Sulawesi , had ancestry from both

5500-445: The countries (sovereign states and dependent territories) listed below. Ten of the eleven states of Southeast Asia are members of the Association of Southeast Asian Nations (ASEAN), while East Timor is an observer state. Papua New Guinea has stated that it might join ASEAN, and is currently an observer. Sovereignty issues exist over some islands in the South China Sea . * Administrative centre in Putrajaya . Southeast Asia

5600-555: The departure of the Mongols, Wijaya established the Majapahit Empire in eastern Java in 1293. Majapahit would soon grow into a regional power. Its greatest ruler was Hayam Wuruk , whose reign from 1350 to 1389 marked the empire's peak when other kingdoms in the southern Malay Peninsula , Borneo , Sumatra , and Bali came under its influence. Various sources such as the Nagarakertagama also mention that its influence spanned over parts of Sulawesi , Maluku , and some areas of western New Guinea and southern Philippines , making it one of

5700-416: The dominant trading power in mainland Southeast Asia for about five centuries, provided passage for Indian and Chinese goods and assumed authority over the flow of commerce through Southeast Asia. In maritime Southeast Asia, the first recorded Indianised kingdom was Salakanagara , established in western Java circa second century CE. This Hindu kingdom was known by the Greeks as Argyre (Land of Silver). By

5800-413: The early people travelled along the south coast of Asia, first entered the Malay Peninsula 50,000–90,000 years ago. The Orang Asli, in particular the Semang who show Negrito characteristics, are the direct descendants of these earliest settlers of Southeast Asia. These early people diversified and travelled slowly northwards to China, and the populations of Southeast Asia show greater genetic diversity than

5900-469: The elite language of the region, which effectively made Southeast Asia part of the Indosphere . Most of the region had been Indianised during the first centuries, while the Philippines later Indianised c.  ninth century when Kingdom of Tondo was established in Luzon. Vietnam, especially its northern part, was never fully Indianised due to the many periods of Chinese domination it experienced. The first Indian-influenced polities established in

6000-458: The envoys, enraged the Mongols and made them sent a large invasion fleet to Java. Unbeknownst to them, Singhasari collapsed in 1293 due to a revolt by Kadiri, one of its vassals. When the Mongols arrived in Java, a local prince named Raden Wijaya offered his service to assist the Mongols in punishing Kadiri. After Kadiri was defeated, Wijaya turned on his Mongol allies, ambushed their invasion fleet and forced them to immediately leave Java. After

6100-518: The equator generally have a tropical rainforest climate , also known as an equatorial climate, though cold ocean currents cause some regions to have tropical monsoon climates with a dry season in the middle of the year, and the Somali Current generated by the Asian monsoon due to continental heating via the high Tibetan Plateau causes Greater Somalia to have an arid climate despite its equatorial location. Average annual temperatures in equatorial lowlands are around 31 °C (88 °F) during

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6200-419: The equator is at the elevation of 4,690 metres (15,387 ft), at 0°0′0″N 77°59′31″W  /  0.00000°N 77.99194°W  / 0.00000; -77.99194  ( highest point on the equator ) , found on the southern slopes of Volcán Cayambe [summit 5,790 metres (18,996 ft)] in Ecuador . This is slightly above the snow line and is the only place on the equator where snow lies on

6300-522: The expansion of Austroasiatic and Austronesian groups. Distinctive Basal-East Asian (East-Eurasian) ancestry was recently found to have originated in Mainland Southeast Asia at ~50,000BC, and expanded through multiple migration waves southwards and northwards respectively. Geneflow of East Asian-related ancestry into Maritime Southeast Asia and Oceania could be estimated to ~25,000BC (possibly also earlier). The pre-Neolithic Papuan-related populations of Maritime Southeast Asia were largely replaced by

6400-411: The expansion of various East Asian-related populations, beginning about 50,000BC to 25,000BC years ago from Mainland Southeast Asia. The remainders, known as Negritos, form small minority groups in geographically isolated regions. Southeast Asia was dominated by East Asian-related ancestry already in 15,000BC, predating the expansion of Austroasiatic and Austronesian peoples . In the late Neolithic ,

6500-450: The fact that sunrise begins (or sunset ends) as the upper limb, not the center, of the Sun's disk contacts the horizon. Earth bulges slightly at the Equator; its average diameter is 12,742 km (7,918 mi), but the diameter at the equator is about 43 km (27 mi) greater than at the poles. Sites near the Equator, such as the Guiana Space Centre in Kourou , French Guiana , are good locations for spaceports as they have

6600-412: The fastest rotational speed of any latitude, 460 m (1,509 ft)/sec. The added velocity reduces the fuel needed to launch spacecraft eastward (in the direction of Earth's rotation) to orbit, while simultaneously avoiding costly maneuvers to flatten inclination during missions such as the Apollo Moon landings . The precise location of the Equator is not truly fixed; the true equatorial plane

6700-590: The fifth century CE, trade networking between East and West was concentrated in the maritime route. Foreign traders were starting to use new routes such as Malacca and Sunda Strait due to the development of maritime Southeast Asia. This change resulted in the decline of Funan, while new maritime powers such as Srivijaya , Tarumanagara , and Mataram emerged. Srivijaya especially became the dominant maritime power for more than 5 centuries, controlling both Strait of Malacca and Sunda Strait . This dominance started to decline when Srivijaya were invaded by Chola Empire ,

6800-498: The former western colonies under the concept of " Greater East Asia Co-Prosperity Sphere ". However, the Shōwa occupation regime committed violent actions against civilians such as live human experimentation, sexual slavery under the brutal " comfort women " system, the Manila massacre and the implementation of a system of forced labour , such as the one involving four to ten million romusha in Indonesia. A later UN report stated that four million people died in Indonesia as

6900-455: The geographical layout of volcanic island chains, which are created by shifting hot spots under Earth's crust as the axis and crust move. This is consistent with the Indian tectonic plate colliding with the Eurasian tectonic plate , which is causing the Himalayan uplift. The International Association of Geodesy (IAG) and the International Astronomical Union (IAU) use an equatorial radius of 6,378.1366 km (3,963.1903 mi) (codified as

7000-461: The island of New Guinea ; it is the only place where ice glaciers can be found in Southeast Asia. The highest mountain in Southeast Asia is Hkakabo Razi at 5,967 metres (19,577 feet) and can be found in northern Burma sharing the same range of its parent peak, Mount Everest . The South China Sea is the major body of water within Southeast Asia. The Philippines, Vietnam, Malaysia, Brunei, Indonesia, and Singapore, have integral rivers that flow into

7100-500: The land of eleven sovereign states . Indonesia is the country straddling the greatest length of the equatorial line across both land and sea. Starting at the Prime Meridian and heading eastwards, the Equator passes through: The Equator also passes through the territorial seas of three countries: Maldives (south of Gaafu Dhaalu Atoll ), Kiribati (south of Buariki Island ), and the United States (south of Baker Island ). Despite its name, no part of Equatorial Guinea lies on

7200-472: The lands they conquered, and attempted to spread European institutions to the region. Several Southeast Asian countries were also briefly occupied by the Japanese Empire during World War II . The aftermath of World War II saw most of the region decolonised. Today, Southeast Asia is predominantly governed by independent states. The region, together with part of South Asia, was well known by Europeans as

7300-465: The largest empire to ever exist in Southeast Asian history. By the 15th century CE however, Majapahit's influence began to wane due to many war of successions it experienced and the rise of new Islamic states such as Samudera Pasai and Malacca Sultanate around the strategic Strait of Malacca . Majapahit then collapsed around 1500. It was the last major Hindu kingdom and the last regional power in

7400-641: The ocean. Magellan's voyage records how much more manoeuvrable their vessels were, as compared to the European ships. A slave from the Sulu Sea was believed to have been used in the Magellan expedition as a translator. Studies presented by the Human Genome Organisation (HUGO) through genetic studies of the various peoples of Asia show empirically that there was a single migration event from Africa, whereby

7500-425: The opening of the hospital. The medical school was established two years later in 1890. Prince Dipangkorn Rasmijoti was also born here. Siriraj was the residence of the late King of Thailand, Bhumibol Adulyadej , from September 2009 to August 2013. He entered the hospital for treatment of a respiratory condition. In October 2014 King Bhumibol had gall bladder surgery at Siriraj. He died there on 13 October 2016 at

7600-611: The phrase circulus aequator diei et noctis , meaning 'circle equalizing day and night', from the Latin word aequare 'make equal'. The latitude of the Earth's equator is, by definition, 0° (zero degrees ) of arc. The equator is one of the five notable circles of latitude on Earth; the other four are the two polar circles (the Arctic Circle and the Antarctic Circle ) and the two tropical circles (the Tropic of Cancer and

7700-668: The region and Sri Lanka . Buddhism later established a strong presence in Funan region in the fifth century. In present-day mainland Southeast Asia, Theravada is still the dominant branch of Buddhism, practised by the Thai, Burmese, and Cambodian Buddhists. This branch was fused with the Hindu-influenced Khmer culture. Mahayana Buddhism established presence in Maritime Southeast Asia, brought by Chinese monks during their transit in

7800-407: The region and made contacts with local courts. Local rulers converted to Hinduism or Buddhism and adopted Indian religious traditions to reinforce their legitimacy, elevate ritual status above their fellow chief counterparts and facilitate trade with South Asian states. They periodically invited Indian Brahmins into their realms and began a gradual process of Indianisation in the region. Shaivism

7900-423: The region as Islam provided a positive force among the ruling and trading classes. Gujarati Muslims played a pivotal role in establishing Islam in Southeast Asia. Trade among Southeast Asian countries has a long tradition. The consequences of colonial rule, struggle for independence, and in some cases war influenced the economic attitudes and policies of each country. From 111 BC to 938 AD northern Vietnam

8000-513: The region before the arrival of the Europeans. Islam began to make contacts with Southeast Asia in the eighth-century CE, when the Umayyads established trade with the region via sea routes. However its spread into the region happened centuries later. In the 11th century, a turbulent period occurred in the history of Maritime Southeast Asia . The Indian Chola navy crossed the ocean and attacked

8100-523: The region came under contact with the Indian subcontinent c.  400 BCE , it began a gradual process of Indianisation where Indian ideas such as religions, cultures, architectures, and political administrations were brought by traders and religious figures and adopted by local rulers. In turn, Indian Brahmins and monks were invited by local rulers to live in their realms and help transforming local polities to become more Indianised, blending Indian and indigenous traditions. Sanskrit and Pali became

8200-639: The region en route to Nalanda . It is still the dominant branch of Buddhism practised by Indonesian and Malaysian Buddhists. The spread of these two Indian religions confined the adherents of Southeast Asian indigenous beliefs into remote inland areas. The Maluku Islands and New Guinea were never Indianised and its native people were predominantly animists until the 15th century when Islam began to spread in those areas. While in Vietnam, Buddhism never managed to develop strong institutional networks due to strong Chinese influence. In present-day Southeast Asia, Vietnam

8300-626: The region were the Pyu city-states that already existed circa second century BCE, located in inland Myanmar. It served as an overland trading hub between India and China. Theravada Buddhism was the predominant religion of these city states, while the presence of other Indian religions such as Mahayana Buddhism and Hinduism were also widespread. In the first century, the Funan states centered in Mekong Delta were established, encompassed modern-day Cambodia, southern Vietnam, Laos, and eastern Thailand. It became

8400-541: The region, specifically, the Philippines. East Timor and the eastern half of Indonesia (east of the Wallace Line in the region of Wallacea ) are considered to be geographically associated with Oceania due to their distinctive faunal features. Geologically, the island of New Guinea and its surrounding islands are considered as parts of the Australian continent , connected via the Sahul Shelf . Both Christmas Island and

8500-487: The rest of Indonesia , Malaysia , southern Vietnam , and Palau by 1000 BC. They often settled along coastal areas, replacing and assimilating the diverse preexisting peoples. The Austronesian peoples of Southeast Asia have been seafarers for thousands of years. They spread eastwards to Micronesia and Polynesia , as well as westwards to Madagascar , becoming the ancestors of modern-day Malagasy , Micronesians , Melanesians , and Polynesians . Passage through

8600-453: The result of the Chola expeditions. As Srivijaya influence in the region declined, The Hindu Khmer Empire experienced a golden age during the 11th to 13th century CE. The empire's capital Angkor hosts majestic monuments—such as Angkor Wat and Bayon . Satellite imaging has revealed that Angkor, during its peak, was the largest pre-industrial urban centre in the world. The Champa civilisation

8700-431: The temporary exhibit featured the role of Siriraj Hospital. The latest museum is Siriraj Bimuksthan Museum, opened in early 2013. The museum is housed in the renovated vintage architecture of the old Bangkok Noi railway station , next to Siriraj's newly opened private subsidiary Siriraj Piyamaharajkarun Hospital . The museum exhibits history of medicine in Thailand from traditional medicine to modern, and includes history of

8800-484: The term became more restricted to territories of the former French Indochina (Cambodia, Laos, and Vietnam). The maritime section of Southeast Asia is also known as the Malay Archipelago , a term derived from the European concept of a Malay race . Another term for Maritime Southeast Asia is Insulindia (Indian Islands), used to describe the region between Indochina and Australasia . The term "Southeast Asia"

8900-402: The west and from the east. Regular trade between the ships sailing east from the Indian Ocean and south from mainland Asia provided goods in return for natural products, such as honey and hornbill beaks from the islands of the archipelago. Before the 18th and 19th centuries, the Europeans mostly were interested in expanding trade links. For the majority of the populations in each country, there

9000-445: The whole of Earth. Near the equator, this means the variation in the strength of solar radiation is different relative to the time of year than it is at higher latitudes: maximum solar radiation is received during the equinoxes, when a place at the equator is under the subsolar point at high noon, and the intermediate seasons of spring and autumn occur at higher latitudes; and the minimum occurs during both solstices, when either pole

9100-520: The younger population of China. Solheim and others have shown evidence for a Nusantao maritime trading network ranging from Vietnam to the rest of the archipelago as early as 5000 BC to 1 AD. The Bronze Age Dong Son culture flourished in Northern Vietnam from about 1000 BC to 1 BC. Its influence spread to other parts Southeast Asia. The region entered the Iron Age era in 500 BC, when iron

9200-501: Was already inhabited by Homo erectus from approximately 1,500,000 years ago during the Middle Pleistocene age. Distinct Homo sapiens groups, ancestral to Eastern non-African (related to East Asians as well as Papuans) populations, reached the region by between 50,000BC to 70,000BC, with some arguing earlier. Rock art (parietal art) dating from 40,000 years ago (which is currently the world's oldest) has been discovered in

9300-598: Was comparatively little interaction with Europeans and traditional social routines and relationships continued. For most, a life with subsistence-level agriculture, fishing and, in less developed civilisations, hunting and gathering was still hard. Europeans brought Christianity allowing Christian missionaries to become widespread. Thailand also allowed Western scientists to enter its country to develop its own education system as well as start sending royal members and Thai scholars to get higher education from Europe and Russia. During World War II, Imperial Japan invaded most of

9400-668: Was first used in 1839 by American pastor Howard Malcolm in his book Travels in South-Eastern Asia . Malcolm only included the Mainland section and excluded the Maritime section in his definition of Southeast Asia. The term was officially used in the midst of World War II by the Allies , through the formation of South East Asia Command (SEAC) in 1943. SEAC popularised the use of the term "Southeast Asia", although what constituted Southeast Asia

9500-459: Was forged also in northern Vietnam still under Dong Son, due to its frequent interactions with neighbouring China. Most Southeast Asian people were originally animist , engaged in ancestors, nature, and spirits worship. These belief systems were later supplanted by Hinduism and Buddhism after the region, especially coastal areas, came under contact with Indian subcontinent during the first century. Indian Brahmins and traders brought Hinduism to

9600-544: Was located in what is today central Vietnam, and was a highly Indianised Hindu Kingdom. The Vietnamese launched a massive conquest against the Cham people during the 1471 Vietnamese invasion of Champa , ransacking and burning Champa, slaughtering thousands of Cham people, and forcibly assimilating them into Vietnamese culture. During the 13th century CE, the region experienced Mongol invasions , affected areas such as Vietnamese coast, inland Burma and Java . In 1258, 1285 and 1287,

9700-414: Was not fixed; for example, SEAC excluded the Philippines and a large part of Indonesia while including Ceylon . However, by the late 1970s, a roughly standard usage of the term "Southeast Asia" and the territories it encompasses had emerged. Although from a cultural or linguistic perspective the definitions of "Southeast Asia" may vary, the most common definitions nowadays include the area represented by

9800-458: Was often grouped with Australia and Oceania in the mid to late 1800s, rather than with mainland Asia. The term Oceania came into usage at the beginning of the 1800s, and the earlier definitions predated the advent of concepts such as Wallacea. Equator The equator is a circle of latitude that divides a spheroid , such as Earth , into the Northern and Southern hemispheres . On Earth,

9900-436: Was the dominant religious tradition of many southern Indian Hindu kingdoms during the first century. It then spread into Southeast Asia via Bay of Bengal , Indochina, then Malay Archipelago, leading to thousands of Shiva temples on the islands of Indonesia as well as Cambodia and Vietnam, co-evolving with Buddhism in the region. Theravada Buddhism entered the region during the third century, via maritime trade routes between

10000-500: Was under Chinese rule. Vietnam was successfully governed by a series of Chinese dynasties including the Han , Eastern Han , Eastern Wu , Cao Wei , Jin , Liu Song , Southern Qi , Liang , Sui , Tang , and Southern Han . Records from Magellan's voyage show that Brunei possessed more cannon than European ships, so the Chinese must have been trading with them. Malaysian legend has it that

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