Since World War I was a "total" war, this meant that entire economies and industries of nations were mobilized to help the war effort--meaning that factory production turned towards things like making tanks and weapons, instead of "regular" items.
They all were however they want you to answer Russia because Russia left the Axis Powers after Hitler attacked Russia.
The answer is 4 and it’s letter B
Answer:
Mesopotamia was able to grow crops with no hassle. This helped Mesopotamia ensure the safety of the crops and supply food for Mesopotamia.
Explanation: