For 10 points, name this ancient empire of Southeast Asia, mostly located in Cambodia.
This empire failed to keep Harideva on the throne of the rival Champa kingdom. Previously, the Champa had traitorously switched sides in a war between this empire and Dai Viet. It was initially centered on the region of Kambuja, and it was destroyed by Ayuthaya. Its ruler Jayavarman VII, who may have had leprosy, built a prodigious number of temples, including Bayon, a few miles north of another complex built by Suryavarman II. That temple, which was in imitation of Mount Meru and was surrounded by a moat, is Angkor Wat. For 10 points, name this ancient empire of Southeast Asia, mostly located in Cambodia.
This empire failed to keep Harideva on the throne of the rival Champa kingdom.
{Khmer} Empire [do NOT accept Khmer {Rouge}]