It is significant that Buddhist relics found in North Thailand bear a striking Theravada influence, whereas those found in the South clearly show their Mahayana connections dating back from Srivijaya days. To a great extent this is due to the fact that, in their heyday of suzerainty over Thailand, the Burmese under Anuruddha were content with Upper Thailand only, while leaving the South practically to be ruled by their Khmer (Cambodian) vassals whose capital was at Lopburi.