By the Sudan administration this region has been divided into mudirias (provinces), one, including the central portion, retaining the name of Sennar.
For purposes of local government the chief towns constitute governorships (moafzas), the rest of the country being divided into mudirias or provinces.
The rest of the Sudan is divided into mudirias (provinces) and these are subdivided into mamuria.
The mudirias are Haifa, Red Sea, Dongola and Berber in the north (these include practically all the region known as Nubia); Khartum, Blue Nile and White Nile in the centre; Kassala and Sennar in the east; Kordofan in the west; and Bahrel-Ghazal, Upper Nile (formerly Fashoda) and Mongalla in the south.
The mudirias vary considerably in size.
Besides the Egyptian and Red Sea routes there is considerable trade between the eastern mudirias and Abyssinia and Eritrea, and also some trade south and west with Uganda and the Congo countries.
Each of the mudirias into which the country is divided is presided over by a mudir (governor) responsible to the central govern ment at Khartum.