Farming remained the the main economic activity. It moved west with settlement. Inventions, such as cotton gin, encouraged planters to grow even more crops.
(mark me a brainlest)
Mansa Musa depended heavily on the gold trade for his power.
<span>Mansa Musa depended on a series of local city networks for his power. </span>
<span>Mansa Musa used his connection with the Christian rulers to achieve power. </span>
<span>Mansa Musa encouraged an isolated network of trading cities for his power.</span>
A reason could be that trading food wasn’t that popular at the time seeing that you only needed to grow food for your family
I think that you just answered your own question in the question you asked.