  Stop with the immature ad hominem debating tactics. Black people do have a great history and we were not just swinging from three like you all claim.   More   Also, old astronomical manuscripts from the medieval desert collections in Mali and Mauritania show that the Africans knew about the lunar cycle and its shadows long before any European thought about it.  The mosque of the University of Sankore was highly distinguished for the teaching of Koranic theology and law, besides other subjects such as astronomy and mathematics.  In the 14th century, Timbuktu had an estimated population of 115,000 people. Typically, 25,000 were at university and 20,000 were at school. London, by contrast, had a total 14th century population of 20,000 people.  Before you all give credit to the Arabs     The Emperor also brought Arabs scholars to Timbuktu. To his great surprise, the Emperor has found that these scholars are underqualified compared to the black scholars of Timbuktu. Abd Arahman Atimmi had such a low level that he was obliged to migrate to Marrakech to complete his prerequisites so he can sit in the classes as a student.     Quit the copypasta and start debating.