What did Lincoln mean when he said that "the nation will become all one thing or all the other"?
A
Everyone in the nation will either move to the North or to the South.
B
Either everyone in the nation will become slaves, or everyone will become free.
C
All slaves will live either in the North or in the South.
D
Slavery will either become legal in both the North and South or be abolished in both the North and South.