Khartoum society, while others settled in large slums at the outskirts of the city. Since the mid-1980s, large numbers of refugees from South Sudan and Darfur fleeing the violence of the Second Sudanese Civil War and Darfur conflict have settled around Khartoum. In 1991, Osama bin Laden purchased a house in the affluent al-Riyadh neighborhood of the city and another in Soba. He lived there until 1996, when he was banished from the country. Following the 1998 U.S. embassy bombings, the United States accused bin Laden's al-Qaeda group and, on 20 August, launched cruise missile attacks on the al-Shifa pharmaceutical factory
Siege of Khartoum injustices caused by the Egyptian colonial administration: arbitrary imprisonments were cancelled, torture instruments were destroyed, and taxes were remitted. To enlist the support of the population, Gordon legalised slavery, despite the fact that he himself had abolished it a few years earlier. This decision was popular in Khartoum, but caused controversy in Britain. Gordon was determined to "smash up the Mahdi". He requested that a regiment of Turkish soldiers be sent to Khartoum as Egypt was still nominally a province of the Ottoman Empire. When this was refused, Gordon asked for a unit of Indian Muslim troops and later for