Austronesian languagesThe Austronesian languages (ˌɔːstrəˈniːʒən) are a language family widely spoken throughout Maritime Southeast Asia, Malay Peninsula, parts of Mainland Southeast Asia, Madagascar, the islands of the Pacific Ocean and Taiwan (by Taiwanese indigenous peoples). There are also a number of speakers in continental Asia. They are spoken by about 386 million people (4.9% of the world population). This makes it the fifth-largest language family by number of speakers.
Khmer EmpireThe Khmer Empire was a Hindu-Buddhist empire in Southeast Asia, centered around hydraulic cities in what is now northern Cambodia. Known as Kambuja by its inhabitants, it grew out of the former civilisation of Chenla and lasted from 802 to 1431. Historians call this period of Cambodian history the Angkor period, after the empire's most well-known capital, Angkor. The Khmer Empire ruled or vassalised most of mainland Southeast Asia and stretched as far north as southern China.
Southeast AsiaSoutheast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical south-eastern region of Asia, consisting of the regions that are situated south of mainland China, east of the Indian subcontinent, and north-west of mainland Australia 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.
South VietnamSouth Vietnam, officially the Republic of Vietnam (RVN; Việt Nam Cộng hòa; République du Viêt Nam), was a country in Southeast Asia that existed from 1955 to 1975, the period when the southern portion of Vietnam was a member of the Western Bloc during part of the Cold War after the 1954 division of Vietnam. It first received international recognition in 1949 as the State of Vietnam within the French Union, with its capital at Saigon (renamed to Ho Chi Minh City in 1976), before becoming a republic in 1955.
Mekong DeltaThe Mekong Delta (Đồng bằng Sông Cửu Long or simply Đồng Bằng Sông Mê Kông), also known as the Western Region (Miền Tây) or South-western region (Tây Nam Bộ), is the region in southwestern Vietnam where the Mekong River approaches and empties into the sea through a network of distributaries. The Mekong delta region encompasses a large portion of south-western Vietnam of over . The size of the area covered by water depends on the season. Its wet coastal geography makes it an important source of agriculture and aquaculture for the country.
Spratly IslandsThe Spratly Islands (Kapuluan ng Kalayaan; Mandarin ; Kepulauan Spratly; Quần đảo Trường Sa) are a disputed archipelago in the South China Sea. Composed of islands, islets, cays, and more than 100 reefs, sometimes grouped in submerged old atolls, the archipelago lies off the coasts of the Philippines, Malaysia, and southern Vietnam. Named after the 19th-century British whaling captain Richard Spratly who sighted Spratly Island in 1843, the islands contain less than of naturally occurring land area, which is spread over an area of more than .
