The Wassoulou empire, also referred to as the Mandinka Empire, Samory's Empire or the Samorian State, was a short-lived West African state that existed from roughly 1878 until 1898, although dates vary from source to source. It spanned from what is now southwestern Mali and upper Guinea, with its capital in Bissandugu; it expanded further south and east into northern Ghana and Ivory Coast before its downfall.

West Africa or Western Africa is the westernmost region of Africa. The United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, and Togo, as well as Saint Helena, Ascension and Tristan da Cunha. The population of West Africa is estimated at 419 million people as of 2021, and at 381,981,000 as of 2017, of which 189,672,000 were female and 192,309,000 male. The region is demographically and economically one of the fastest growing on the African continent.