Over time, the Fulɓe empire split among the later descendants and developed into many emirates. The main nuclei of Fulɓe power were the polities in the Senegal River Valley, the Fuuta Jallon mountains, in Guinea, the Inland Delta of the Niger in Mali (Maasina), the north of Nigeria and the Adamawa Plateau in Cameroon. In between these big centres there were numerous small polities dominated by the Fulɓe in the central Gourma of present-day Mali and the north and west of Burkina Faso (Jelgoji, Boboola, Dori, Liptako), northern Benin (Borgu), the Sene-Gambia, northern Senegal (Bundu), and the southern and western parts of present-day Niger (Dallol Bosso, Birni N'konni).