Recently I thought about "What if?" the US stayed split after the civil war, and slavery was still happening in the confederate states. Then maybe a weaker US in the north would not have much of an impact on German aggression in Europe's Great War (1914-1946). And with the confederate states now allies with the Nazis afterward in 1950, another war between the north and south looks likely. With each side eager to test a new weapon just developed -- the Atom Bomb.
I just recently (within the last year) started doing illustrations of an alternate 1950 where there is still slavery in the South and Nazis rule Europe.
I don't read Sci-Fi books, but I'm guessing this idea has already been written about by someone?
Thanks for any info.