Were they/are we not all Americans? Had the South prevailed how would world history have been affected? Would there have been a First World War and would a Balkanized America stayed out of it or would some states supported one side or the other? The Confederacy itself at the time was a tenuous entity at best. And would there have been a Second World War and an Adolph Hitler? Again, how would a fractured have dealt with Nazism?
Obama et al would be your problem; not mine.