This may be fun to do with Ghost Kiss.
Southern Victory/TL-191. The Confederate States of America defeats the United States in 1862, gains the support of the UK, and France, and becomes a independent nation.
Shit gets real with the USA and CSA goes head to head in 3 more major wars. (The Second Mexican-American War when the South buys northern land from a Empire of Mexico in 1880. The USA lost that war and became best pals with the German Empire to the point of using German base gear, and uniforms and tactics.)
Great War 1 (The USA sided with Germany, and the South with the UK and France. CP won that one.)
And Great War 2. (South went Nazi, carry out a Black Holocaust/the Population Reduction that saw the death of 8 million Blacks, out of 10 million living in the South before Great War 2 before the war ended, and the South was reconquer by the North.
Oh, and Atomic bombs went everywhere. Philadelphia by the South . Newport News (near Richmond) and Charleston by the Unon. Petrograd (St. Petersburg), Paris, London, Norwich, and Brighton by the Germans. The Last 3 was over the Fascist UK nuking Hamburg,) en.wikipedia.org/wiki/Southern…