By making the civil war only about the preservation of slavery against abolitionists. Though this was one reason, It was originally started because they felt that the federal government was being unfair and unjust towards them in the way that they taxed them.
1.) ending of slavery
2.) gold mining
3.) more estate
The "Articles of Confederation" and "Perpetual Union" are two of the first American Constitutions wrote.
An isolationist no problem and seriously this is the right answer.