Kampuchea Krom is the region variously known as Southern Vietnam, Nam Bo, and the former French Cochinchina. Bordering present-day Cambodia, the region is positioned in Cambodian nationalist narratives as a "once-integral part of the Khmer kingdom that was colonised by France as Cochinchina in the mid-nineteenth century, then was ceded to Vietnam in June 1949".. Despite historical cessations with the latest one in 1770 to the rulling Nguyễn Lords of the period. In the present day, the region roughly corresponds to the Mekong Delta region of Vietnam.

The Vĩnh Tế Canal is an 87-kilometre-long (54 mi) canal in southern Vietnam, designed to give the territory of Châu Đốc a direct access to the Hà Tiên sea gate, Gulf of Siam.