Angkor "Capital City"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 Sanskritnagara (नगर), meaning "city".[3] The Angkorian period began in AD 802, when the KhmerHindu monarch Jayavarman II declared himself a "universal monarch" and "god-king", and lasted until the late 14th century, first falling under Ayutthayan suzerainty in 1351. A Khmer rebellion resulted in the 1431 sacking of Angkor by Ayutthaya, causing its population to migrate south to Longvek.