All math begins with counting. The first known mathematician was from South Africa. Of course he wasn’t African-American because America didn’t come until 35,000 years later but he left his math work behind, ….on a bone which he used to count. He carved ridges which are numbers. and we know that because we have the carvings. (HERE.)
The Border Cave is in the Lebombo Mountains between South Africa and Swaziland. In the 1970’s during the excavations of Border Cave, a small piece of the fibula of a baboon, the Lebombo bone, was found marked with 29 clearly defined notches, and, at 35,000 years old, it ranks with the oldest mathematical objects known. The bone is dated approximately 35,000 BC and resembles the calendar sticks still in use by Bushmen clans in Nimibia.
The question is: what happened since?
One theory is the smarter people moved to Europe. But the people who stayed weren’t dumb, not at all. Life in Southern Africa is much easier than life in Europe where people can freeze to death. Doesn’t happen in Southern Africa.