Siege of Khartoum support of the Mahdi, and cut the Egyptian traffic on the Nile and the telegraph to Cairo. Communications were not entirely cut, as runners could still get through, but the siege had begun and Khartoum could only rely on its own food stores, which could last five or six months. On 16 March an abortive sortie from Khartoum was launched, which led to the death of 200 Egyptian troops as the combined forces besieging Khartoum grew to over 30,000 men. Through the months of April, May, June, and July, Gordon and the garrison dealt with being cut off as food
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