The history of Cambodia is very interesting. Teh first major kingdom was called Funan and lasted from 100 A.D. to 600 A.D. The greatest Kingdom was the Khmer empire which covered most of South-East Asia including most of Laos, Thailand and Vietname as well as Cambodia. It was a very advanced civilisation which affected the development of the whole region.
They built hospitals, irrigation canals, reservoirs and roads, as well as hundreds of beautiful temples around their capital Angkor.