At the beginning of the 20th century the province (along with Battambang) was in turn ceded back to Cambodia (now part of French Indochina) in the Franco-Siamese Treaty of 1907, due to the failure of 1904 version of treaty which the French accidentally annexed Thai speaking city of Trat.
At the start of the 20th century, the region (along with Battambang) was subsequently returned to Cambodia (now part of French Indochina) in the Franco-Siamese Treaty of 1907, due to the failure of the 1904 treaty version that the French inadvertently annexed the Thai-speaking city of Trat.