Remember what one guy with a pistol touched-off in June 1914.
And remember that the North acquiesced to the South’s secession, to wit overthrowing the government of half the nation; it wasn’t until CSA attacked a small island that the US Navy had literally built that war commenced and didn’t stop until that island was reclaimed and all consequential issues were resolved. Seems the US Civil War wouldn’t have happened if Lee & friends had just said “leave the island alone; they built it, it’s theirs.”