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How could the following be possible and what does it mean for the 20th century:
North German Federation circa 1866 OTL including Luxembourg
South German Federation (Habsburg empire) including Alsace-Lorraine, Baden, Württemberg, Bavaria, Austria (including South Tyrol, Slovenia, and Burgenland with Pressburg-Sopron), and the Czech Republic.
Hungary (including everything in the Hungarian half of the Dual Monarchy with Bosnia-Herzogovina).
Poland (including everything in Congress Poland and Austrian Galicia)
What would the economic development of these countries look like by the 20th century and what would their relations be?