great topic shizzla, i think i'll post regularly in this one.
Well im guessing that most of the south western states would go to the CSA, where as north western states would be part of the USA. If the states had the same boundaries they have right now, the map would looks something like this:
(Red = USA, Blue = CSA).
After the defeat of the USA, the Confederation decides to put into the oficial surrender treaty of the United States that the USA will give up its right to the states of Ohio and Maryland, the District of Columbia, aswell as the state of California
As a result, the CSA becomes a much more powerful nation than the USa, which has been devestated by war and has now had its capital and some very important industrail states taken away.
Much more conservative nation, slavery is finally abolsihed in the CSA in the late 19th century, but an appartheid style regime similar to that in South Africa remains in power until the mid-1980s.
Culturally the CSA is more conservative and religious than the USA which has taken a more secular stance with complete separation of church and state. Theories such as intelligent design are taught in schools across the CSA, and evolution is put forward as an unproven theory, as set by the Education Department of the CSA.
I'll put in more once i think some more stuff up.