What source of income did the majority of the african countries depend on for their prosperity?

mining

conquest

trade

fishing

The answer is: Trade

The african countries had a large number of natural resources (such as oil, gold, iron, copper, etc) . But very few of them had develop their technologies enough to convert these natural resources in to usable goods.

Because of this, the majority of them still overly reliant on other countries through trades in order to fulfill the market's demand.

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muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.