I love youtube, any idiots can write what ever it seams racial to them. Go and do some research and you will find out, things started to change in Africa around 700 AD. When the Arabs invaded from the north In Egypt and in West Central from Zanzibar.
You have to do some research, you will find out that the Greeks knew the answers to that and the adopted the same knowledge and at later so did the Romans.
I love youtube, any idiots can write what ever it seams racial to them. Go and do some research and you will find out, things started to change in Africa around 700 AD. When the Arabs invaded from the north In Egypt and in West Central from Zanzibar.