Nilo-Saharan Languages

Nilo-Saharan languages, a group of languages that form one of the four language stocks or families on the African continent, the others being Afro-Asiatic, Khoisan, and Niger-Congo. The Nilo-Saharan languages are presumed to be descended from a common ancestral language and, therefore, to be genetically related. The family covers major areas east and north of Lake Victoria in East Africa and extends westward as far as the Niger valley in Mali, West Africa. Its genetic unity was first proposed in a classificatory study dating from 1963 by the American linguist and anthropologist Joseph H. Greenberg.