I would say B. Rivers provided a source of both water and transportation.
This would have to be true, as the great amount of waterways connecting the region would allow for transportation and a supply of water.
Answer:
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Explanation:
The interaction between Muslim merchants and North African merchants provided a gateway for the Islamic belief system to influence the country of Mali. The reason for the location where it spread to was basic geography and their already-stated interaction through trade caused a mix of cultures and belief systems.
cause what problem?
you didnt give all the informtion