Thesis Statement for north and south strategy in the civil war?

Question

PLEASEEE HELP.
I need a controversial thesis statement (not question) that has to do with the reasons the north and the south fought the civil war. PLEASE.

Answer 1

The Civil War began over states' rights to leave the union, not over slavery at all.

That shouldn't be too hard to back up either.

Answer 2

The south called the Civil War "The War of Northern Aggression".

You take it from there!