Nationalism is still super scary and I'm super shaking right now just having read that.
Remember that time had that anschluss with "Austria," and the Czechs? Next thing you know, the National Socialists "invaded" Poland to get that land back too. All that wasn't right.
The Germans entered WWI like last because of defense pacts then got all that land they stole during the 30's because they wanted to take over the world.
Stalin invaded Poland around the same time as Germany. The USSR kept their portion of Poland after the Nationalist Socialist Imperial Germans tried to steal those aforementioned parts of Poland.
It was crazy. Don't mess with the Jews Communist Jews Zionists God's Chosen People!
is a nice guy btw. I owe him a reply - I think.
RE: Is Nationalism to blame? (It sounds like you mean Imperialism)