Answer:
C: Irrigation systems
Explanation:
A can help farm, but it doesn't give the ability to since water would be needed in the desert.
B is more for hunting and fighting, not farming.
C gives water which makes them able to farm in the desert.
D doesn't change much, as in, they'd still need water.
Answer:
He played a key role in helping the Russians with peace talks
The answer to this one is B
I think it is b. if you get a green card, it means you are going to live in america forever.
