This is Alternate History.

The United Republics of South Africa are all neither republics nor united. The majority of the "Republics" are dictatorships, where as the rest are simply Kingdoms. The Union was formed as a result of British aggression upon the Boer peoples. With military aid from European nations such as Germany and Spain; the South African Republics successfully defended their liberty from the United Kingdom in the First South African War. Many new Republics sprung up after the war as mercenary groups bought lands from the indigenous populations. The Union was officially proclaimed in 1855 at the dawn of the First South African War. Now the Union struggles to keep it's unity as the Indigenous Kingdoms proclaim more autonomy from Potchefstroom. Zululand, Swaziland, and Natalia Republic grow more restless as greater numbers of Boers migrate into their lands. Ethnic tensions rise by the day. The arms industry keeps South Africa on the map for now; however such a large stockpile of arms might spark the powder keg.

Notes:
Took me longer than I thought, and I'm not sure I love the colour schemes but it's the best I could do.