History of Sudan association with the single largest political grouping, the [[National Umma Party Sudan|Umma Party]] (once led by a descendant of the Mahdi, [[Sadiq al Mahdi]]). Taking advantage of conditions resulting from Ottoman-Egyptian exploitation and maladministration, the Mahdi led a nationalist revolt culminating in the fall of [[Khartoum]] on 26 January 1885. The interim governor-general of the Sudan, the British Major-General [[Charles George Gordon]], and many of the fifty thousand inhabitants of Khartoum were massacred. The Mahdi died in June 1885. He was followed by [[Abdallahi ibn Muhammad]], known as the [[Caliph|Khalifa]], who began an expansion of Sudan's area into Ethiopia. Following
Khartoum North the area of the Nile confluence before the Egyptians established Khartoum as their military garrison and administrative center in the 1820s. It was thereafter eclipsed by the Egyptian Khartoum, its Mahdist replacement Omdurman, and the British refounding of Khartoum following their reconquest of the country in 1898. Khartoum North began to grow again, however, as the southern terminus of the Sudan Military Railroad, which was completed in 1899. (The Blue Nile was bridged in 1910 and the line extended to Sennar, but Khartoum North continued to serve as the main railroad station and yard.) On August 20, 1998 the Al-Shifa