I don't get their point. Of course they're wrong, but if they were correct what would it say about Africa? Arithmetic and Algebra was supposedly invented in Africa and now look at it. The most desolate place on earth. This is also where the first human supposedly came from. Nonsense.
Some of my thoughts, too. Since Egypt is on the African continent, why did all this wonderful math not find its way to the other countries there? Had it made it, the African continent would be one of the most advanced civilized places on the planet. Instead, it's one of the most backward,war-ridden, corrupt hellholes this planet has to offer. And there seems to be NO apparent movement to catch up with the 21st century. Most of those place have to pass through the 16th, 17th, 18th 19th, & 20th centuries to even think about doing so.