Answer:
C) Better military leadership
Explanation:
The South fought for a living, thus had a great army, however the North was new to the fighting life and military.
Yes, it is generally true that industrial agriculture uses far more fossil fuels than sustainable agriculture, since fossil fuels such as coal and gas are "finite" resources that will eventually be depleted.

the answer is

you must add the exponents when multiplying their coefficients. The

are technically

for which your answer is
D. Test aniexty.
Look up the definition of "aniexty" for more information.