Teutonic Order and Prussia

[Askiya]

even more important: Germany wouldnt have united if Napoleon hadnt conquered most of europe, and ruled it under a single administration. This would influence Germany and Italy to later unify themselves, in the process making Europe actually view-able on the map with ease.

The HRE is a real pain in my conquests in EU3, because of the fact its ridiculously easy to conquer most of it due to it really being hundreds of city states, but doing so causing legitimacy and infamy to drop like a rock.
and the Emperor generally being Austria...beyond Bohiema, Austria, Burgundy (which was part of the HRE), Brandunburg/Tetounic Order/ Prussia/Germany, and Poland, its really just a paper tiger.

Indeed. He unified all of the ridiculous tiny German states running around into larger ones (i.e. Saxony, Bavaria, etc.) which made German unification a lot easier. Although if it's so easy to conquer the HRE in that game when it is divided, maybe only the larger states should be represented, and in a Defensive pact maybe.