When addressing the issue of the Sudan, nationalist writers often created characters who spoke with a certain kind of Sudanese voice or accent and who discussed important themes of the time, like companionate marriage or slavery or the unity of the Nile Valley. … For Egyptian nationalists, the argument with the British remained heated in such dialogues, as did the effort to convince the Sudanese of Egyptian rights to sovereignty over them.

Eve M. Troutt Powell, A Different Shade of Coloni…, loc. 105