Check out this dreadful map created during colonial times: https://www.reddit.com/r/MapPorn/comments/87yjqk/colonizability_of_africa_in_1899_by_sir_harry/?st=JFCDQTU9&sh=59b0dea8 Read its legend and shudder!

Just did some research for a video I'm working on, so if you've got any questions, let me know and I'll see if I can answer it or try to find out.