The Answer is a I just took the test, and it didn't eliminate the need of a railroad, nor was it constructed on a land with few plants or animals, it was in a jungle like environment.
ANSWER IS A
Ok so when the americans moved west, they built plantations and needed slaves for the plantations. In the east, however, the northern half wanted to free all of them.
Well from reading Percy Jackson, Zeus is the king.
Treaty of Shimonoseki. Signed on April 17, 1895.