Correct answer choice is :
B) Center of learning and trade
Explanation:
The Mali Empire was a realm in West Africa from 1230 to 1670. The empire was established by Sundiata Keita and became notable for the wealth of its rulers, particularly Musa Keita. Timbuktu is best remembered for its memorable Djinguereber Mosque and prestigious Sankore University, both of which were built in the early 1300s under the reign of the Mali Empire, the most popular ruler, Mansa Musa.
