Answer:
Correct answer is: A. allowing them to trade goods.
Step-by-step explanation:
A is the correct answer as this two civilization were able to connect themselves, to trade and spread even their culture to other regions.
B is not the correct answer because Nile didn't gave them this territories, but it actually provided them to trade these gods across the river itself.
C is not correct as Nile actually allowed them to farm, not the other way.
D is not correct as Nile didn't affect this civilizations i