Briefly and simply, he was moving toward Russia and Poland was in the way.
My relations lived in SE Poland near Gorlice, most Ruysn people were forced out of their homes into larger cities in Poland or into the Ukraine.
Many Polish and German people were moved in and took over stolen lands.The germans were afriad the local people of the region might side with Russia so they were given one hour to leave.
I know many in my family lost contact for over 40 some years with their relations in the insanity that was all around them. One of my second cousins was held as a forced laborer for an SS officer for 5 years.My family was not Jewish but Slav.
I Know many Ruysn people have now returned to SE Poland, they bought back their own lands and rebuilt. Most however left for other countries, the US , Canada and the UK mostly.
Because it was right next to Germany and he hated Jews , when Jews hid in Poland he destroyed Poland
He hated slavs which really doesn't make sense because he was one and jews and he wanted to expand so he invaded most of europe
To begin WWII and start expanding
He wanted world domination (not a joke answer)
They did a sh?t job fitting his kitchen out...usually poles are good at it..hmmm....
jew know dis