Jolof Empire
In the 14th century the Jolof Empire grew more powerful, having united Cayor and the kingdoms of Baol, Siné, Saloum, Waalo, Futa Tooro and Bambouk, or much of present-day West Africa. The empire was a voluntary confederacy of various states rather than being built on military conquest. The empire was founded by Ndiadiane Ndiaye, a part Serer and part Toucouleur, who was able to form a coalition with many ethnicities, but collapsed around 1549 with the defeat and killing of Lele Fouli Fak by Amari Ngone Sobel Fall.