[2] Longvek was chosen by King Ang Chan I after the sacking of Angkor by the Siamese as a new capital because of its more readily defensible terrain.
Longvek was located halfway between Phnom Penh and the southern end of the Tonlé Sap and it was chosen by King Outey Reachea III (1516–1566) as his official capital.
Longvek became the nation's capital in the 16th century after the civil war between King Ang Chan I and Sdach Korn.
Spanish and Portuguese adventurers and missionaries, like Blas Ruiz de Hernán González from Ciudad Real, first visited the kingdom during this period.
Blas became a friend of King Satha of Longvek, who was well-disposed towards foreigners,[4] and while in the kingdom got to know Portuguese adventurer Diogo Beloso from Amarante.