"It is known that Abubakar equipped about 400 long boats, half for provisions to last a very long time, to try to cross the atlantic. One ship came back saying the others had been taken on a fast Western current (Northern Equatorial, Mali was at the Eastern end of it). Abubakar then set out himself with about 2,000 long boats, again half for provisions. Nobody saw him again, making Mansa Musa king. There is a lot of archaeological evidence in the Americas to show they probably made it, stuff with obviously African influences, such as the long boats, carvings and mostly black settlements.
BTW, Mansa Musa is himself famous for causing a gold market crash due to his exhorbitant spending on the way to the Hajj."
Most Americans aren't very knowledgeable about pre-colonial North Africa. Let me lay it out: these people were friggin' rich because they had huge amounts of gold as a natural resource and traded extensively around the Mediterranean and through Africa. Yes, kingdoms and trade routes existed long before the European explorers. Muslims at this time had boats to ply the trade routes, and not just coast hugging, but hundreds of miles into open water.
If you want to deny history just because it's Muslim, fine, live in ignorance. Or maybe you could pick up a non-Muslim textbook and read the same stuff for yourself. Mansa Musa is about the most famous African Muslim.