Well a lot of the factual parts can be found by googling for example the Moorish influence on Europe. The 'extrapolation' I did from what had been happening - you will need to look at history books by non-European authors of pre-to-mid 19th century Africa. And you'll need to read several Africa is a huge place- and there is no one book African history that can do it justice. Just like, to get a real sense of Germanic history you can't just read a book of European history. 
There are some great research on the Bantu empire which spanned most of central Africa up to sometime in the 18th century. The Mali empire which peaked around 1330AD. And of course, down South we had the Zulu empire - still in it's infancy.