Waged war against Champa for twenty two years
Conquered much of the Champa’s land
Was a follower of Mahayana Buddhism and made it the state religion.
Under his reign the Khmers built Angkor Thom, including its Bayon Temple, along with many other temples, roads, hospitals and rest houses for travellers and traders
After his death no other temples were built and the Khmer lost much of it’s territory they had conquered in Champa to their east.