WI: Re-establishment of the Commonwealth.

What if, after WW1, Poland and Lithuania re-established the Polish-Lithuanian Commonwealth? How would it affect the future. Would if be able to become a powerful force in Eastern Europe and would WW2 be affected in anyway?
 
What if, after WW1, Poland and Lithuania re-established the Polish-Lithuanian Commonwealth? How would it affect the future. Would if be able to become a powerful force in Eastern Europe and would WW2 be affected in anyway?

Impossible due to nationalism, status of Wilno, and Lithuanian fear of being treated as lesser partner. As for military/economic potential - it would not differ from interwar Poland much - it`s not late medieval Grand Duchy but rather smallish Baltic republic.
 
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