Map of Africa during 1850s.
<a href="//commons.wikimedia.org/wiki/User:ArnoldPlaton" title="User:ArnoldPlaton">ArnoldPlaton</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>. svg version of <a href="//commons.wikimedia.org/wiki/File:Africa1850s.png" title="File:Africa1850s.png">Africa1850s.png</a>