Answer:
A. It outlawed the expansion of slavery west of the Mississippi river.
All of Korea would have been communist and much of what you see today with North Korea would probably have been the state of all Korea had the North won.
It also would have spread communism to a much farther degree and the U.S. would not have South Korea as an ally.
voting beacuse voting is a choice
Where's the choices ???????????????????????///
The president. The president is the chief executive of the U.S. government. Glad I could help :)