Mahdiyah
The Mahdiyah (Mahdist regime) imposed traditional Islamic laws. Sudan's new ruler also authorized the burning of lists of pedigrees and books of law and theology because of their association with the old order and because he believed that the former accentuated tribalism at the expense of religious unity.
The Mahdiyah has become known as the first genuine Sudanese nationalist government. The Mahdi maintained that his movement was not a religious order that could be accepted or rejected at will, but that it was a universal regime, which challenged man to join or to be destroyed. The Mahdi modified Islam's five pillars to support the dogma that loyalty to him was essential to true belief. The Mahdi also added the declaration "and Muhammad Ahmad is the Mahdi of God and the representative of His Prophet" to the recitation of the creed, the shahada. Moreover, service in the jihad replaced the hajj, or pilgrimage to Mecca, as a duty incumbent on the faithful. Zakat (almsgiving) became the tax paid to the state. The Mahdi justified these and other innovations and reforms as responses to instructions conveyed to him by God in visions.
The Mahdist regime was also known for its severe persecution of Christians in Sudan, including Copts.
Read more about this topic: History Of Mahdist Sudan