Answer:
I saw this question on my recent test
B. Both were common governments for early river valley civilizations.
This was my answer and Got it right. Hope This helps you! :0) lol
The poles receive more direct sunshine so it has to do with the angle that the light hits. The Earth is round and when light hits it the light wraps around the earth. At the poles the light is very stretched and at the equator it is very direct hence it is hotter at the poles.
10+(30)+744
40+744
Answer: 784
The answer is the ocean-continental convergence. This is where the gold of the Inca civilization come from.
South is downstream
Hope this helps