Province of central Sudan, known as the `White Land'; area 146,990 sq km/ 56,752 sq mi; population (1983) 3,093,300. Although never an independent state, it has a character of its own. It is mainly undulating plain, with acacia scrub producing gum arabic, marketed in the chief town El Obeid. Formerly a rich agricultural region, it has been overtaken by desertification.