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What did Mansa Musa do to leave an important mark on Mali?

He introduced Islam to Mali.

He conquered the kingdom of Egypt.

He conquered the kingdom of Mali.

He introduced the gold trade to Africa.

Mansa Musa is best known for his pilgrimage to Mecca in 1324, during which he famously distributed so much gold that he inadvertently caused inflation in the regions he passed through. This event helped to popularize the wealth and power of Mali, and also allowed Mansa Musa to forge important diplomatic and economic ties with other Islamic empires in North Africa and the Middle East. His promotion of Islam in Mali and his role in expanding trade routes helped to solidify Mali's position as a major player in the trans-Saharan trade network.