What i contributed so far:
Moze kiedy w przyszlosci
A bralem, bralem. Jeszcze lezy u mnie na dysku sporo niewlaczonego kodu. --Taw
I have been gone for several days. Will try to catch up on the questions accumulated in the meanwhile. First of all. Danzig is located in the territory of Old Prussian Land. The church however "christianized" Danzig from the West by the Cistercians. Oliva (at Danzig) was founded ca 1178 and christianized from Pomerania- Pomerellia (little Pomerania). Pomerania was a part of the Holy Roman Empire.
Monk Christian of Oliva, was designated the Apostle of Prussia by the pope. Brandenburg margraves had inheritance right to Danzig, but pope gave Danzig and Pomerellia to Teutonic Order together with Prussia, Livonia etc. (Earlier history was recorded as part of Magna Germania , first time 98 AD ).
Prussia was "christianized' from the east. (First Poland tried, was repelled several times by Prussians). Then Baltic Crusades or Northern Crusades against Prussia, Livonia, Lithuania. Archbishop of Riga was then head over the four bishoprics of Prussia (by order of William of Modena, papal legate). Riga was under Visby, Gotland. Posen or Poznan was til circa 1250 under Magdeburg. Before the Polanen received ducal title from emperor , they were part of Czech .(Czech and Lech)Czech and Polish dukes, kings all pledged allegiance to emperors for the land they held in lien (on loan)
Mieszko and Boleslaw were margraves of the empire ( married to Saxons).
Later Polish kings all were married to Habsburgs, Vasas ( Austria, Sweden were part of empire) Archbishop of Krakow (a Hanseatic League city was a prince of the empire. And "Polish " kings continued pledging allegiance to emperors, either by pledge, marriage or as members of the order of the "Golden Fleece". (Catholic Counter-reformation). From circa 1695 to 1768 ? Electors of Holy Roman Empire , Saxony were also kings of Poland.
They probably did not put too much emphasis on all these facts in your country during the communist regime.
With your last statement about Hitler, perhaps you can explain to me the Polish leader Rydz Smygly( can't remember exact spelling) , who in March 1939 had a portrait of himself painted riding through the Brandenburg Gate in Berlin taking over Germany. What explanation do you have for that ?
What is your explanation of the expulsion of hundereds of thousands of Germans from Polish Corridor starting after 1919 and of the 50 thousand of these (ethnic) Germans from the Polish Corridor in summer 1939, herded on a death march by Polish neighbors( recorded as Bromberger Blut Sonntag (Bromberg Bloody Sunday)?
H. Jonat