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What if the Silesian Piasts won out and Masovia south of Vistula was confiscated from the Masovian Piasts causing them to unite with Prussia, later on Brandenburg-Prussia forms and it has a Polish minority in Masovia and later it joins united Germany, what will happen to Germany if it overstretches to the Baltics and denies Sea access to Poland but Poland is rich in ores and in industry.
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