Austria is already a member of the European Union and has been since the EU started. read more
Both Austria and Germany were already 'united' under the european union since they are members and both of their currency is the euro. They also share the same schengen agreement. Austria and Germany together with Switzerland share the german language and these countries work together closely in terms of science, art, media etc. read more
Kaiser Wilhelm II's naval obsession and its impact on relations with Great Britain is irrelevant as the King of Prussia is vassal to the German Emperor/King of Austria. Bismarck might still serve the Emperor. He was a German, after all, and his King is vassal to the Emperor. The strength of a united Germany would make holding the Balkans easier. read more