At the beginning of the civil war the four border states kind of acted as a buffer between the north and the south. They were slave holding states ( like the south) but they sympathized with the north.
It had two impacts in the US.
-we no longer have acid rain and pollution decreased
-contributed to the deep splits between conservatives and liberals.
It was called isolationism :D
Answer:
autoridad ejecutiva es la respuesta correcta
Explanation:
