There is no such thing as black history. Blacks never invented a system of writing. They only use writing that they have borrowed from their colonizers and slave masters. Without writing there is no history. Without history it means that the race is prehistoric. That is just the simple definition of the word.
Swahili, for instance, the lingua franca of central african negroes, originally used the arabic script which came from the arab slave traders. It now uses the roman alphabet which was introduced by christian missionaries. It was a fad to offer Swahili courses at USSA colleges for a while. Useful phrases were taught such as, "Please don't throw me in that big cooking pot!"