What we know and that we do not know about Africa?

Part 1. What do we know about Africa and why doctor Aybolit had to get lost in it? General information about the continent countries, its nature, climate and minerals. Very famous — the Egyptian civilization and Cartago, probably someone read about nubian and Ethiopian cultures. All know that through the continent passes the Equator, there hot and there is a Sahara Desert. And still, probably, heard about an apartheid, trade Blacks, Mandela Nelson and "mainly white" the country South Africa. It seems, not so it is not enough. But actually this continent and presently really terra incognito! The continent Africa on one of...