Question

During the Civil War, the border states __________.
were pro-Union
fought on the side of the Confederacy
were divided between the Union and the Confederacy
stayed in the Union but had to jail large numbers of pro-Confederacy supporters

Answer 1

@Shadow if you have a chance would you mind checking this question out?

Answer 2

To put it plainly, the border states were slave states that more than anything remained relatively nuetral, however, some did jail Confederate supporters, namely Kentucky.