Answer:
Either the United States would become all free or the United States would become all slave.
Step-by-step explanation:
Abraham Lincoln believed that slavery should not spread anymore.
A house divided against itself cannot stand. –Abraham Lincoln. This quotation reflects Lincoln's belief that either the United States would become all free or the United States would become all slave.
In the quotation ''A house divided against itself cannot stand'', ''house'' stands for the united states of America.