Ayutthaya at first was only a small city kingdom on the northwestern edge of the succeeded in powerful Khmer empire. Within less than a century, however, Taikings pushing back the Khmer, and in 1431 they sacked their great capital of Angkor.Wars against neighbouring powers remained endemic, however, throughout the Ayutthayan period. In 1438 a greatly weakened Sukhothai was made a province of Ayutthaya. Lan Na, however, remained free of Ayutthayan control, although it was later brought under Burman infl