Sudan, History Of The, Medieval Christian kingdoms

The 200 years from the fall of Kush to the middle of the 6th century is an unknown age in the Sudan. Nubia was inhabited by a people called the Nobatae by the ancient geographers and the X-Group by modern archaeologists, who are still at a loss to explain their origins. The X-Group were clearly, however, the heirs of Kush, for their whole cultural life was dominated by Meroitic