Seriously? Prussia? The German exclave? How on earth would it manage that?
*breaths in*
Not QUITE.
Königsberg is a wierd place. See, the Duke of Prussia happens to be the King of Poland-Lithuania-Ruthenia, who is, of course, Augustyn III. Prissia, however, is a constituent Kingdom of the Holy Roman Empire of the German and Hungarian nations, so the King of the Commonwealth also has a voice in the National Diet of Germany, and can influence the affairs of the Empress in Vienna; he can vote as part of the Diet(hereditary nobles, as opposed to the elected Bundestag, which has most of the power today, sort of like the British Parliament vs House of Lords before the Sundicalist Revolution in 1910) and has some power as semi Constitutional monarch in Prussia, which is more power than he has as King of the Commonwealth. It's... wierd, putting it mildly. After the Commonwealth and Empire formed the Alliance that would see them through the Eurasian War against France, Russia, and Japan, there were talks of the Commonwealth just buying Prussia, but nothing ever came of that; I guess the Hapsburgs like to keep their reminder of their total defeat of that upstart King in Prussia, Frederick II.