OpenStax
Open Stax: West Africa and the Role of Slavery
This section of a chapter on "The Americas, Europe, and Africa Before 1492" takes a look at the major West African empires and discusses the roles of Islam and Europe in the slave trade.
Digital History
Digital History: The Black Man's African Past [Pdf]
Read the narrative of Oladuah Equiano (or Gustavas Vassa) who described the culture of Benin as he was growing up in mid-18th century. On this site there is also a brief, general history of Africa at this time. [pdf]
University of Groningen
American History: Essays: African Empires
Informative site from the University of Groningen describing the role African empires played in the settlement patterns of world acquisitions.