So much is made of Divine intervention when talking about the US, but I believe that it's just a play on words to allow the US to put its nose in where it shouldn't be in the first place. I feel that the Southern states, ala CSA, would have been a counter balance to the USA and just maybe the world might be better off.
1. The hatred between the North and South wouldn't be a factor. In fact I don't think it would have been as much a factor if only the North had dispensed with Reconstruction and just welcomed us back into the, so called, Union as equals.
2. Would the Depression have even taken place?
3. WWI and WWII may not have even happened. Why? Because World order would have been so different. I'm not saying that there wouldn't have been a war I'm just saying that it wouldn't have been a WW.
4. Race relations, I think they would have been so much better. Slavery was already dead, it just didn't know it. The South wouldn't have been so poor and could have managed it's affairs so much better.
5. There would be no immigration problem.
6. And most important the USA would not be nearly the size it is today and Government, as a whole, would be much less intrusive.