In the 1795 Siam took control over Western Cambodia, and made the area into Siamese province of Inner Cambodia with the administration capital in Phra Tabong (Battambang). This province lasted until 1907 when Siam traded Inner Cambodia for the return of Trat and Dan Sai. In the same year, King Sisowath decided to split the return Inner Cambodian Province into Battambang Province (which included Sisophon) and Siem Reap Province. When Thailand re annexed western Cambodia 1941, Sisophon was split off Battambang Province and was an administration capital of Phibunsongkram Province which lasted until 1946 when the whole region was return to the French control.