1. Regions/areas: I am aware that these is probably not intended to be an actual representation of the political map at that time; rather areas equate roughly to historical regions or provinces, still some things could be improved.
- There is no West- and Ost-Pommern. They should be Vor- and Hinterpommern, respectively.
- Glogau and Grünberg should be part of Silesia (Schlesien), not the Lausitz.
- The three easternmost regions of Ostpreussen should be Polish. These are lands that were under Prussian rule since the partitions of Poland, but not a historical part of East Prussia. Prussia lost them after Tilsit to the Duchy of Warsaw.
- The map is missing West Prussia (Westpreussen). If everything from the Vistula (Weichsel) to the Memel (Niemen) is one area, it should be named Preussen, not Ostpreussen. Otherwise, the easternmost provinces of Pommern, the two northernmost of Grosspolen, and the westernmost of Ostpreussen should become Westpreussen.
2. Spelling of names:
- Mecklenburg (with an "n") is correct, as the map has it. The tooltip information says Mecklemburg (with an "m").
- In Mecklenburg, the region is correctly labeled Wittenberge. However, the town is called Wittenberg (no "e").
- Grossbeeren (needs an additional "e")
- Görlitz (with an "ö")
- Grünberg (with an "ü")
- Königgrätz (needs both an "ö" and an "ä") - presently, the region has Koniggrätz and the town Königgratz
- Olmütz (with an "ü") - correct in the region and tooltip, but the town says Olmutz
- Lötzen (in Ostpreussen)
- Neidenburg (ditto, not Niedenburg)
- Königsberg (yes, Koenigsberg is a correct transliteration, but you have an "ö" elsewhere)
- Insterburg (map says Intersburg)
- Lüneburg (not Luneburg)
- Halberstadt (correct in the region and tooltip, but the town is now labelled Halberstad, without a "t")
This is just from what I saw today in playing Poland. There is more ... should I keep it coming?
leure: )... but it will be done 
