Answer: Inadequate capital to develop waterways port and for the purchase of vessels.
fluctuation of water levels which makes sailing difficult as a result of rivers passing through dry areas.
Explanation:
Here were the choices on that question:
a. poverty
b. lack of adequate rivers
c. mountains
<span>d. richness
The answer is D. richness. Based on A Companion to World History, the African Sahel can be a corridor of communication between Nile and Niger valleys but did not materialize. The reason was the richness of Sahel that it that it can provide for itself even without trade.
</span>
<span>Guðni Th. Jóhannesson
</span>