Darfur (dɑːrˈfʊər ; Dār Fūr) is a region of western Sudan. Dār is an Arabic word meaning "home [of]" – the region was named Dardaju (Dār Dājū) while ruled by the Daju, who migrated from Meroë 350 AD, and it was renamed Dartunjur (Dār Tunjur) when the Tunjur ruled the area. Darfur was an independent sultanate for several hundred years until it was invaded and incorporated into Sudan by Anglo-Egyptian forces in 1916. As an administrative region, Darfur is divided into five federal states: Central Darfur, East Darfur, North Darfur, South Darfur and West Darfur. Because of the War in Darfur between Sudanese government forces and the indigenous population, the region has been in a state of humanitarian emergency and genocide since 2003. The factors include religious and ethnic rivalry, and the rivalry between farmers and herders.
The first historical mention of the word Fur occurs in 1664 in the account by J. M. Vansleb, a German traveler, of a visit to Egypt (Petermann (1862-3). Mittheilungen, Erganzungsband II). It is claimed that, like sūdān, fūr means "blacks", and was the name given by the early light-colored Berber sultans of Darfur to the original inhabitants of the country such as the Binga, Banda, etc. As the historic dynasty's physical appearance became more "Africanized" from intermarriage with black wives and concubines, the appearance of the sultans darkened correspondingly and they became known by the appellation of their subjects, Fūr.
Darfur covers an area of , approximately the size of mainland Spain. It is largely a semi-desert plateau with the Marrah Mountains (Jebel Marra), a range of volcanic peaks rising up to of topographic prominence, in the center of the region. The region's main towns are Al Fashir, Geneina, and Nyala.
There are four main features of its physical geography. The whole eastern half of Darfur is covered with plains and low hills of sandy soils, known as goz, and sandstone hills. In many places the goz is waterless and can only be inhabited where there are water reservoirs or deep boreholes.