 Complete the following phrase:  Southern Sudan, i.e. South Kordofan and what is now South Sudan was neither Christianized nor Islamized until the 19th century. This region fell under Islamic rule under Muhammad Ali, and there has been religious and ethnic conflict ever since; the Mahdiyah uprisings 1881-1899 can even be seen as the origin of political Islamism and resulted in British control during 18991955. Racial and religious conflicts between the Arab Muslim north and the Black African Christian South re-erupted in the 