), is a country located in the southern portion of the Indochina Peninsula in Southeast Asia.

It is 181,035 square kilometres (69,898 square miles) in area, bordered by Thailand to the northwest, Laos to the northeast, Vietnam to the east, and the Gulf of Thailand to the southwest. The official religion is Theravada Buddhism, practiced by approximately 95 percent of the population.

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Burials, much richer than other types of finds, testify to improvement of food availability and trade (even on long distances: in the 4th century BC trade relations with India were already opened) and the existence of a social structure and labour organisation.

Also, among the artefacts from the Iron Age, glass beads are important evidence.

In 1863 Cambodia became a protectorate of France which doubled the size of the country by reclaiming the north and west from Thailand. The Vietnam War extended into the country with the US bombing of Cambodia from 1969 until 1973.

Following the Cambodian coup of 1970, the deposed king gave his support to his former enemies, the Khmer Rouge.

The country's minority groups include Vietnamese, Chinese, Chams, and 30 hill tribes.

The capital and largest city is Phnom Penh, the political, economic, and cultural centre of Cambodia.The Khmer Rouge emerged as a major power, taking Phnom Penh in 1975 and later carrying out the Cambodian Genocide from 1975 until 1979, when they were ousted by Vietnam and the Vietnamese-backed People's Republic of Kampuchea in the Cambodian–Vietnamese War (1979–91).Following the 1991 Paris Peace Accords, Cambodia was governed briefly by a United Nations mission (1992–93).Archaeological records for the period between Holocene and Iron Age remain equally limited.A pivotal event in Cambodian prehistory was the slow penetration of the first rice farmers from the north, which began in the late 3rd millennium BC.In 802 AD, Jayavarman II declared himself king, uniting the warring Khmer princes of Chenla under the name "Kambuja".