As pointed out by another thread South Carolina and other Southern states didn't get along internally. What if after the Civil war the Southern states themselves break apart? Northern Alabama secedes from Alabama, Jones County secedes from Mississippi and East Tennesee secedes from Tennesee and then things go really crazy. The average Southern state breaks into 6 pieces. So instead of 11 Confederate states (Missouri and Kentucky being under Union control means they weren't REALLY Confederate states. After all the US saying Argentina, for example, was a US state would not make it one. At least without winning a war to make it so.) you have 66 by 1867. All of them fighting each other. What happens next?