ウェブ6 日前 · 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, …