The document discusses the evolution and rise of the powerful Khmer Empire in Southeast Asia. It states that kings like Jayavarman II were able to establish an empire that lasted over six centuries not just through political systems but also through religious power and privilege. Jayavarman II developed a social structure based on the Indian caste system that positioned him as a god king, giving him religious authority over fellow kingdoms. The strategic location of Angkor and a large, dedicated military also contributed to the development and control of the Khmer Empire in the region.