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.
There is a powerful effect known as the "Butterfly Effect" that weighs heavily against the scenario.
The Point of Departure (The last day this situation follows our world) would be in the 1860s, if not earlier still. This by itself has profound ramifications:
Children are born from a combination of a mother's egg cell fertilized by a father's sperm. If that act happens in a slightly different way than OTL (Our Time Line), then that child is never born. Instead, a sibling of the same age is born instead.
Adolf Hitler, for example, was born in 1883. Just by the dice, there would be a 50% chance that there would be an Adelle Hitler instead, and that's ignoring the odds that the meeting between his parents actually happens either. Klara Hitler was all of 16 when she met Alois Hitler. Furthermore, Klara lost most of her children-if that is run fairly, Adolf has to beat long odds as well.
With a PoD in the 1860s, the world would consist entirely of random characters in by 1910. These characters would share grandparents with OTL people, but an Austrian Prostitute living in Munich has no chance of being elected Kanzler of Germany.
So the specifics have to be gutted. The National Socialist Party probably never forms; people we know as staples of history are never born: FDR, Winston Churchill, Joseph Stalin. That alone doesn't mean the world can't repeat its somewhat unlikely direction in the 1930s, but we then have to ask how the CSA would interplay with world events.
The CSA and USA aren't going to get along. Parts of the Confederate States have seceded from it, trying to join the Union (the Appalachians, for Example). The CSA claims Kentucky, Missouri, West Virginia, as well as any other portions of its territory it has to concede to get any kind of peace. Throw in Fugitive Slave Hunters abducting escaped slaves and hundred of thousands of vengeful soldiers and there will be no international reconciliation.
Furthermore, the CSA almost by definition is going to be a dictatorship. One third of its population is slaves and its policies were set by the narrow cliche of its planter elite. It may be a military dictatorship, run by people like Nathan Bedford Forrest; it definitely is unstable, a large armed camp that's already got a penchant for censorship and enslaving free blacks.
We can safely assume that the CSA is turning into a rather bleak place. Keeping slavery into 1950, or heck into the present day, may well be entirely possible--most confederate stories don't want the CSA to continue its likely movement into national dystopia, even though it turning into a giant armed camp to keep a third of its people in profitable forced labor would probably be a move in that direction.
The problem remains tying this all together. If the USA and CSA fight another war, the CSA will get bashed up very well; smashed to the point where it is either annexed back to the Union, or perhaps left as a vassal nation with forced emancipation. The Union and Confederacy would probably not participate in a WWI analog, which would likely pit them against each other.
Now we run to the point where the music stops. Hitler isn't born, his or her equal age sibling is instead. He or She is unlikely to survive childhood, poverty, and the WWI analog. The odds are something like 1:20 against.
Strong money is on Hitler not surviving.
And now there is a WWI analog with no US involvement; With the US out (and probably a full neutral, given how the UK and France would be instrumental in keeping the CSA alive), Germany probably WINS the WWI analog. The French economy collapses as the US refuses to make empty loans to France--that's what they get for propping up the Richmond Regime.
Germany's enthusiastic annexation of Luxembourg and the Baltic States is not the national grievance; nor are its Jewish minority, who clearly did not stab it in the back. And while France and Italy are moving into Fascist Territory and Russia has collapsed into warlords, no one cares about a homeless man spewing hatred. (To be fair, even fewer care about a single mother of two; as long as she gives those soldiers a good time).
Victorious, Monarchical Germany may indeed pursue an atomic bomb. With the National Socialist Movement never emerging, Albert Einstein is a well respected physicist in Germany itself; the power of such a device and it's importance in retaining control around the edges of enlarged Germany, still fragile Austria-Hungary and angry neighbors, a nuclear program may well begin, and may well bear fruit by 1950.
The Confederacy, now a twisted cross between Pakistan and North Korea owing to its prolonged dictatorship and abuse of its own citizens, is not a top tier scientific power. Nor is it on friendly terms with German MittelEuropa. It may develop nuclear weapons in the 1980s or so.
Oh, and did I mention: The German American relationship is quite strong, balancing a Anglo-Frence-Confederate relationship. If there is a WWII, it will feature Germany and a largely German United States teaming up against the Fascist/Slaveholding Entente.