Answer: a.) Congo
Explanation: The CONGO river’s drainage basin includes areas both north and south of the equator. Its flow is stable because there is always a rainy season somewhere along the river.
The mississippi river is a physical feature as it was discovered during a time where man weren`t capable of such construction in the earth.
Raw materials earn less profit than finished goods.
Innovations I’m not 100% sure but I do think that’s is right