Siege of Khartoum currency to the post of Governor-general in January 1884 and arrived at Khartoum on 18 February 1884, less than one month prior to the siege. Muhammad Ahmad bin Abd Allah, self-proclaimed Mahdi, engaged in an 18-year Mahdist War (1881–99) against the British Empire (Khedivate of Egypt), the Ethiopian Empire, the Congo Free State, and the Kingdom of Italy. In a series of telegrams in early March, 1884, Gordon informed the British government that the Mahdi were closing the roads, cutting off supplies and severing telegraph communications. As the fighting drew closer to the city walls, and the blockade tightened, the siege
Khartoum Bridge (finished in October 2007) and the Tuti Bridge that links Khartoum to Tuti Island. In the 21st century, Khartoum developed based on Sudan's oil wealth (although the independence of South Sudan in 2011 affected the economy of Sudan negatively). The center of the city has tree-lined streets. Khartoum has the highest concentration of economic activity in the country. This has changed as major economic developments take place in other parts of the country, like oil exploration in the South, the Giad Industrial Complex in Al Jazirah state and White Nile Sugar Project in Central Sudan, and the Merowe Dam