A small kingdom in Indo-China, occupying an area as large as Scotland in the plains of the Lower Mekong. The coast-line is washed by the Gulf of Siam; the landward boundaries touch Siam, Annam, and French Cochin-China; in the N. are stretches of forest and hills in which iron and copper are wrought; a branch of the Mekong flows backward and forms the Great Lake; most of the country is inundated in the rainy season, and rice, tobacco, cotton, and maize are grown in the tracts thus irrigated; spices, gutta-percha, and timber are also produced; there are iron-works at Kompong Soai; foreign trade is done through the port Kampot. The capital is Pnom-Penh, on the Mekong. The kingdom was formerly much more extensive; remarkable ruins of ancient grandeur are numerous; it has been under French protection since 1863.