There's no doubt about that: Africa is the cradle of civilization. You amaze me with the knowledge that some people in African towns or villages have about mathematics. A person who has seen how oral knowledge is transmitted knows that mathematics must require greater work and effort not only from the person who imparts knowledge, but also from the person who receives it. In the same way, the knowledge that our ancestors of astrology may have had is very advanced for their time. In the American continent it is known that many natives, although they did not have the precise tools, could make astrological calculations that new generations have corroborated. In short, African culture is not only fascinating but has also made history, our history. Thank you for this post, @samminator