Answer:
The level of education and vast possession of knowledge. The scholars of Timbuktu were very learned that Kings at the time called them to settle disputes. A manuscript was recently found in Timbuktu. It was on algebra which was translated to French and taken to France for study. The result indicated that it would be a material that would be taught today in second level of University Education.
The people of Timbuktu were exceptionally educated even by today's standards. Though religious studies was a part of what they studied but they made sure to study everything they find.
Such a historic center of learning cannot be replaced.
Ima guess right now and say that its due to what they bought was cheap
the use of the Internet for everything
the change from business to casual wear
the young age of internet users the benefits of shopping online
the shift of retail from storefronts to devices
Answers are A and E