The Kingdom of Cambodia formerly known as Kampuchea , derived from Sanskrit Kambujadesa), is a country in South East Asia with a population of over 14 million people.The kingdom's capital and largest city is Phnom Penh. Cambodia is the successor state of the once powerful Hindu and Buddhist Khmer Empire, which ruled most of the Indochinese Peninsula between the 11th and 14th centuries.

A citizen of Cambodia is usually identified as "Cambodian" or "Khmer," though the latter strictly refers to ethnic Khmers. Most Cambodians are Theravada Buddhists of Khmer extraction, but the country also has a substantial number of predominantly Muslim Cham, as well as ethnic Chinese, Vietnamese and small animist hill tribes.

The country borders Thailand to its west and northwest, Laos to its northeast and Vietnam to its east and southeast. In the south it faces the Gulf of Thailand. The geography of Cambodia is dominated by the Mekong River (colloquial Khmer: Tonle Thom or "the great river") and the Tonlé Sap ("the fresh water lake"), an important source of fish.

Agriculture has long been the most important sector of the Cambodian economy, with around 59% of the population relying on agriculture for their livelihood (with rice the principal crop).Garments, tourism, and construction are also important. In 2007, foreign visitors to Angkor Wat numbered more than 4 million. In 2005, oil and natural gas deposits were found beneath Cambodia's territorial waters, and once commercial extraction begins in 2011, the oil revenues could profoundly affect Cambodia's economy.Observers fear much of the revenue could end up in the hands of the political elites if not monitored correctly.
Cambodia has a wide variety of plants and animals. There are 212 mammal species, 536 bird species, 240 reptile species, 850 freshwater fish species (Tonle Sap Lake area), and 435 marine fish species. Much of this biodiversity is contained around the Tonle Sap Lake and the surrounding biosphere.The Tonle Sap Biosphere Reserve is a unique ecological phenomenon surrounding the Tonle Sap. It encompasses the lake and nine provinces: Kampong Thom, Siem Reap, Battambang, Pursat, Kampong Chhnang, Banteay Meanchey, Krong Pailin, Otdar Meanchey and Preah Vihear. In 1997, it was successfully nominated as a UNESCO Biosphere Reserve.[44] Other key habitats include the dry forest of Mondolkiri and Ratanakiri provinces and the Cardamom Mountains ecosystem, including Bokor National Park, Botum-Sakor National Park, and the Phnom Aural and Phnom Samkos wildlife sanctuaries.


The country has one of the highest deforestation rates in the world. Since 1970, Cambodia's primary rainforest cover fell dramatically from over 70 percent in 1970 to just 3.1 percent in 2007. In total, Cambodia lost 25,000 square kilometres (9,700 sq mi) of forest between 1990 and 2005—3,340 km2 (1,290 sq mi) of which was primary forest. As of 2007, less than 3,220 km2 (1,243 sq mi) of primary forest remain with the result that the future sustainability of the forest reserves of Cambodia is under severe threat, with illegal loggers looking to generate revenue.
Cambodia has an area of 181,035 square kilometers (69,898 sq mi) and lies entirely within the tropics. It borders Thailand to the north and west, Laos to the northeast, and Vietnam to the east and southeast. It has a 443-kilometer (275 mi) coastline along the Gulf of Thailand.

The most distinctive geographical feature is the lacustrine plain, formed by the inundations of the Tonle Sap (Great Lake), measuring about 2,590 square kilometers (1,000 sq mi) during the dry season and expanding to about 24,605 square kilometers (9,500 sq mi) during the rainy season. This densely populated plain, which is devoted to wet rice cultivation, is the heartland of Cambodia. Much of this area has been designated as a biosphere reserve.