<Tr> <Th> Capital </Th> <Td> Mahendraparvata (early 9th cent .) Hariharalaya (9th cent .) Koh Ker (928--944 AD) Yasodharapura (Angkor) (late 9th to early 15th cent .) </Td> </Tr> <Tr> <Th> Common languages </Th> <Td> Old Khmer Sanskrit </Td> </Tr> <Tr> <Th> Religion </Th> <Td> Hinduism Mahayana Buddhism Theravada Buddhism </Td> </Tr> <Tr> <Th> Government </Th> <Td> Absolute monarchy </Td> </Tr>

Contributions of the khmer empire to the culture of southeast asia