Which of the following statements describes a result of the Civil War? A. The United States doubled in size.
B. The Confederacy became wealthy.
C. Cotton exports increased.
D. Slaves were freed.​

The answer is D because what started the civil war in the first place was whether slaves should be freed or not. Aberham Lincoln kept the country apart and put an end to slavery.

abraham lincoln, according to anyone who was connected with agriculture, represented the worst of northern politicians. shortly after lincoln was elected, south carolina seceded from the union. they along with other southern states, retained their anger. in a way, it was their own fault: the democrats were split in the south. some wanted slavery to be extended in other states that were about to join the union and some didn't want it badly enough. lincoln had a solid backing from his party: the republicans were united in not wanting slavery to be expanded.