Serious environmental problems. :)
Answer:
The physical features contributed to the settlements because they were able to create/make sailboat and the wheel.
Explanation:
they did this because it was a land between two rivers that where tigris and euphrates.
C. Fishing
I think fishing would make sense due to living in a river valley.
Answer:
I think it's because of a war they fought and they never won so they never got their independence :3
Explanation:
:3
