The correct answer is B. Timbuktu
Step-by-step explanation:
Timbuktu is a city located in Mali, Africa that became one of the most cities in the region after the 12th century mainly due to its trade and scholar centers. Indeed Timbuktu was a center for trade of salt, gold and event slaves during the 13th century and in subsequent centuries, especially after the 16th century the city played an important role for Islamic scholars as the trade of books was established and an Islamic University was created which made this city one of the most important scholar centers in all the continent and a trade and academic center for Muslims. Therefore, the city that became a center for Mulsim scholarship and trade was Timbuktu.