/ Poland is great Mother of all Slavs from Baltic to Balkan
Well, Poles are Catholic Christians, which make "motherhood" of all Slavs almost impossible. I would like to point out Vatican and its anti-slav policies, which was so obvious during WW2, when Catholic Christian Slavic Croats murdered hundreds of thousands Orthodox Christian Slavic Serbs living in former Austro-Hungarian Empire
The Vatican was officially neutral during WW2., and the Vatican actually saved thousands of Jews during WW2.
Catholics were also targets of Nazi Germany.
Don't forget that Catholic Poland was the first to fight Nazi Germany, while Catholic Czech Republic was the first non- German country to be invaded by Nazi Germany.
Nazi Germany killed many Catholic priests, although many were Polish Catholic priests, not all the priests that were killed were Polish, some were even German.
The oldest survivor of Dachau was a Polish Catholic priest Leon Stepniak.
The Catholic church in Germany had stood up to Nazi Germany, due to Nazi Germanys euthanasia policy.