Khmer Empire By Mike_Olak 1700 BCE Vietnamese armys repeatedly attack Khmer. defeat the Khmer empire. 1593 BCE Thai King (Siamese) attacks and defeats the Khmer King 1432 BCE Khmers abandon Angkor 1431 BCE Thai army attacks Angkor 1300 BCE Buddhism grows rapidly in the empire 1200 BCE Jayavarman III renounces Buddhism into the empire 1100 BCE Jayavarman VII defeats the Chams and expands the empire 1000 BCE Cham Kingdom invades Khmer Empire's eastern territory 900 BCE Angkor Wat is built 800 BCE Jayavarman II enthroned as devaraja 500 BCE Start of Khmer Empire