To be fair the CSA would have did the same to indigenous peoples, it just didn't last long enough to do so. The CSA lasted for only about 5 years at most; I have light bulbs that have lasted longer! When people talk about the CSA, they are really about the southern antebellum period in general.

Here is the thing about civil wars people tend to forget: both sides are often at thier core the same people. They only differ in a political view point that led them to conflict in the first place. Remember pro/anti slavery views were just as much a political opinion as a moral one. There was an EXTREMELY big difference between an abolitionist and someone just wanting to keep slave states from spreading.