the khmer empire is officially known as something else
 history of imperialism  bronze and iron age empires stephen howe writes that with the exception of the roman chinese and perhaps ancient egyptian states early empires seldom survived the death of their founder and were usually limited in scope to conquest and collection of tribute having little impact on the everyday lives of their subjects
 he ascended the throne and continued the war against the neighbouring eastern kingdom for another 22 years until the khmer defeated champa in 1203 and conquered large parts of its territory