Genealogy /
Polish looks? [1410]
Poles and Germans were mixing for ages...Slavs became germanized/Germanics became polonizised as the nation states were build.
Especially the region of Silesia was in their majority german and towns like Krakow were settled after the Mongol raids nearly purely by german settlers who became later polonized...you can't differentiate between them anymore.
Even one of Polands most famous sons, Copernikus, was an ethnical German!
The same with famous Steit Voss...
It's true though Poland did everything to expell their Germans, Jews, whatever
(as the emigration waves during the 60s, 70s and 80s show) but to believe that there are no genes anymore left is just stupid!
(And alone the fact that there were still millions left to emigrate shows that the expellations after the war had been everything but complete)You can get the people who prefer another culture (germanized Poles or Germans) out of your country but hardly the genetics of polonized germanics...
PS: The expellation of Germans has nothing to do with the Marshall plan which was a financial help boost from the US to several european countries.