Question

Why were Delaware, Maryland, Kentucky, and Missouri considered border states during the Civil War?

They were slave states that stayed in the Union.
They were slave states that had boundaries on the ocean.
They were free states that joined the Confederacy.
They were free states next to slave states.

Answer 1

Answer:

They bordered free states of the Union and to their south they bordered slave states of the Confederacy, with Delaware being an exception to the latter.

Explanation: