Angkor is a region of Cambodia that served as the seat of the Khmer Empire, which flourished from approximately the 9th to 15th centuries. The word Angkor is derived from the Sanskrit nagara, meaning “city”. The Angkorian period began in AD 802, when the Khmer Hindu monarch Jayavarman II declared himself a “universal monarch” and “god-king”, until 1351, when Angkor first fell under Ayutthayan suzerainty, to 1431, when Ayutthaya put down a rebellion and sacked the Khmer capital, causing its population to migrate south to Longvek.
