Mansa Musa was emperor of the West African Mali Empire. Covering roughly 500,000 square miles of land, it was the biggest empire West Africa has ever known. 2. Mansa Musa is still the richest man ...

This was the reality for Mansa Musa, whose riches dwarf those of current world leaders. His immense fortune begs the question: How did he amass such wealth? Donald Trump's cabinet is worth 160 ...