Ah ok. I agree. Generalizations about Africa are generally wrong. There's a world of difference between Cairo or Cape Town or somewhere deep in the jungles of the DRC.
There's really good map of planned and existing submarine cables to Africa at http://manypossibilities.net/african-undersea-cables/ which gives a fairly good idea of where the best and worst internet in Africa is
There's really good map of planned and existing submarine cables to Africa at http://manypossibilities.net/african-undersea-cables/ which gives a fairly good idea of where the best and worst internet in Africa is