Sotho-Tswana (S.31)Subgroup of 1 languagesAncestorsNiger-Congo 1554Atlantic-Congo 1454Volta-Congo 1382Benue-Congo 987Bantoid 701Southern 680Narrow Bantu 548Central 354S 25Sotho-Tswana (S.31)Setswana tsn, a language of Botswana