Namibia
Namibia became a German colony in 1884.  This was to stop the British.  The country was called German South-West Africa.   From 1904 to 1907, the Herero and the Namaqua took up arms against the Germans.  In the following Herero and Namaqua genocide, 10,000 Nama (half the population) and about 65,000 Hereros (about 80% of the population) were killed.