It would be a lot harder this time around. We don’t have a clear South to rise again or a clear North to take umbrage at it.
However much hatred and heinousness could arise. More like an intifada than a war.
No North or South. Just the “cities”. It will be as it has been down through history, rural vs urban. Farmland vs pavement. Why is it that the “cities” can’t understand they are surrounded by a sea of red. IMHO