To be honest, something happened within unexplored Africa in the 1500s that caused interior tribesmen to flee westward. This caused conflicts with blacks already living there and resulted in wars with those from the interior.
Those interior tribesmen, captured by the coastal people in such wars, were murdered and eaten or sold to various slave ship owners who then shipped them to the Americas.
There were no blacks in South Africa when the Portuguese settled there. It was not until SHAKA sent his impis south driving the other tribes before them that a massive influx of blacks into South Africa began.
The corral of Shaka had a radius of 500 miles around it in which no person was allowed to enter. All those blacks had been driven out.
In the area that became THE ORANGE FREE STATE, was depopulated of blacks by other native chieftans who waged a war of genocide in the area. Whites later settled there because it was an empty area.
As you can see, genocide is not new in Africa.
This is inaccurate. There were no "blacks" at the Cape, but they'd been in parts of SA to the north and east for a very long time indeed.
Probably they started moving in during the early to mid first millennium, IOW a thousand years or so before Europeans showed up. http://www.historytoday.com/shula-marks/south-africa-myth-empty-land
Shaka was a bad dude, but he was in what is now SA, in fact somewhat centrally located, and the people he drove out had been living in SA. Some fled from him almost up to Ethiopia, displacing and exterminating other tribes as they went.
With these factual corrections, I otherwise generally agree with you. Given the technological constraints he worked under, Shaka probably qualifies as the most gifted killer in human history.
Was in hospital recently for surgery. The post-care nurse was named Shaka. She said she was named after a mighty African king, which I guess is one way of looking at it. Being the disgustingly polite person I am, I didn't fill her in on his less attractive attributes.
Also it is one of my rules to never piss off a nurse while unable to effectively defend myself. :)