Who was the black King that discovered America?

They Came Before Columbus : Mansa Abubakari II (African King who arrived and settled in America, 180 years before Columbus).

Kklogictech ✍️

African king Abubakari Mansa Keita Ruler of the Great Ancient Mali Empire in the 13th century, handed over his throne to his brother Mansa Musa who later became one of the wealthiest man in world history, Abubakari desire was to explore the world and pursue knowledge as a Geographer instead of rulership he ended up to reach America before Columbus.
How come we hardly hear about this ancient educated African Kings?