Kampuchea Krom
Kampuchea Krom (Khmer: កម្ពុជាក្រោម, Kâmpŭchéa Kraôm [kampuciə kraom]; "Lower Cambodia") is the region variously known as Southern Vietnam, Nam Kỳ, and the former French Cochinchina. Bordering present-day Cambodia, the region is positioned in Cambodian irredentist narratives as a "once-integral part of the Khmer kingdom that was colonised by France as Cochinchina in the mid-nineteenth century and then ceded to Vietnam in June 1949".