Well, genetically they are still inferior, nothing can be done about that. there is another reason that intelligence fails to manifest abundantly in black people; dumber people make a dumber culture.somehow, this is not a racist comment.
Western North Carolina and eastern Tennessee did not have many slaves, which is fortunant for the people who live there today because it means that the population of blacks is manageable.
It is also good for the blacks living there because their local culture is "enlightened," for lack of a better word.