Had Germany won WWI and acquired a large Eastern European empire afterwards, how long would Mitteleuropa have lasted?
Would Germany's Eastern European empire have survived longer than the Soviet Union's our TL's Eastern European empire survived?
Also, what would have happened to Mitteleuropa after Germany would have lost control over it (whenever that would have been)? Would Russia have moved to fill in the void left by the German withdrawal, or what?
Any thoughts on all of this?