Final answer:
Sundiata was a great leader who expanded Mali's empire and promoted trade and commerce. The statement is true.
Step-by-step explanation:
True. Sundiata Keita, the founder of Mali, ruled over an empire that was larger and wealthier than Ghana. He promoted agriculture and reestablished the gold-salt trade. He expanded his empire to include the trading cities of Kumbi and Walata, and turned the new capital, Niani, into an important center of commerce and trade.