The eastern part very roughly corresponded to the present province of Mongala.

[1] The name comes from the Bangala language, the lingua-franca of the northeast Congo region.

[3] A map of the Congo Free State in 1897 shows the Bangalas district extending along both sides of the northwest section Congo River from Lake Tumba upstream to where the Itimbiri River enters from the north.

[6] As of 1926 the province included the districts of Ubangi, Bangala, Lulonga, Équateur and Lac Léopold II.

[6] Mongala very roughly corresponds to the eastern part of the former Bangala District.