Post-Reich Europe

Inspired by the other thread, let's say Hitler manages to get his Reich all the way to the Urals The only problem is, in 1949 he has had a fatal heart attack. There are two outcomes:

1) USA/UK launches a nuclear alpha strike on Germany a la TBO

2) The Reich falls into civil war between various political factions

What would the aftermath look like for Europe in either case, after almost a decade of Nazi domination?
 
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