History of West Africa

The history of West Africa began with the first human settlements around 4,000 BCE. It has been commonly divided into its prehistory, the Iron Age in Africa, the major polities flourishing, the colonial period, and finally the post-independence era, in which the current nations were formed. West Africa is west of an imagined north-south axis lying close to 10° east longitude, bordered by the Atlantic Ocean and Sahara Desert.