A country needs rules about citizens cause in reality you cant have random people, bad record or not, coming in your country and just being a citizen instantly without any proof of trust, little do they know they could be a terrorist with the rights of a citizen just cause theirs no way to justify who's one or not.
C. The triangular trade route
B because civil rights were earned after the civil war, A war with the anti-Slavery states and The Slave states. Aka The Northern and Southern states
Here is an Article from History.com!
https://www.history.com/topics/american-civil-war/american-civil-war-history
Have a great day!
They identified with their neighbors more than they did with the british
