The original four provinces of the Belgian Congo had considerable autonomy, but in 1933 they were reorganized into six provinces, named after their capitals, and the central government assumed more control.

Congo-Ubangi District faced French territories across the Ubangi River.

By 1954 it had again been divided into Equateur, Tshuapa, Mongala, Ubangi.

[3] Mongala and Ubangi roughly corresponded to the former Bangala and Ubangi districts that made up Congo-Ubangi District.

Today the region is divided into the Mongala, Nord-Ubangi and Sud-Ubangi provinces.