The is thought to be the border between the North and South. Before the Civil War, it was a border between slave states and free states.

c

explanation:

c

i really really really really really really dont know

- "bill clinton ( the 42nd u.s. president, served in office from by low unemployment, declining crime rates and a budget surplus. during clinton's second term, the u.s. economy was healthy, unemployment was low and the nation experienced a major technology boom and the rise of the internet."

your answer would be (a)