Railroads not only led to an increase in the ability to transport raw materials, but they also led to an "<span>B. increase in the demand for raw materials," since it provided for far more opportunities to use such materials all over the country. </span>
Explanation:
the nations needed resources along with more land as to increase their empire. although risky, like Britain's American colony, they had a lot of benefits if pulled off corectly
C or b i'm not all the way sure but i am sure it is one of them
All courts, except the US Supreme Court, are established by Congress.