I need help with question 16

Explanation:

As a result of trans-Saharan trade connecting West Africa to the North, the Berbers became very well known merchants of renown as they handled a lot of the transportation.

West African cities such as Timbuktu, became major centres of culture and trade as the Trans-Saharan trade went through them and led to people of of kinds of culture meeting there to trade.

Religion - especially Islam - spread into West Africa as a result of the trans-Saharan trade as most of the merchants were Muslim.

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