The answer is
A
plsss mark as brilliant
You need physical map to check the amazon river
Answer: In terms of oil reserves, the Middle East is second to none. This “oil miracle” of the world has been shaped by a set of favorable factors, some global and others local, inscribed in the geologic history of the region.
This would be shallow rivers. They're the biggest obstacles by boat on the Congo River.
Hope this will help you!:)
