Answer:
The United States key role before involved in any conflict was the supply of resources and war materials to the allies. Once involved in the war, the U.S. provided man power, naval and air support.
I think the answer should be a
One of the major <span>inventions that improved agricultural output between 1750 and 1870 are:</span><span>
- Cotton gin : </span><span>Eli Whitney invents the cotton gin in 1793, which contributes to the success of cotton as a Southern cash crop.
</span>- iron plow : Jethro Wood invented the iron plow with interchangeable parts in 1819
<span>- Factory-made agricultural machinery (1840s)- this </span> encouraged commercial farming
<span>- chemical fertilizers were sold commercially (1849)
</span>- <span>Steam tractors are tried out</span>
Answer: The Answer Should Be C.
Explanation: Cows and horses made it easier to farm duh...
