Borkou
region, Chad
Also known as: Borku
Borkou, region in northern Chad, centred around the town of Faya (formerly Largeau). It is mostly a sandy desert of the southeastern Sahara, south of the Tibesti massif and west of the Ennedi plateau. Formerly a vassal state of Ouaddaï, a Muslim (Sanūsī) sultanate, it was ceded to France under an Anglo-French agreement (1899), but Sanūsī control over the region was not broken until 1913–14. French troops remained in Borkou (and neighbouring Ennedi and Tibesti)...