0
The problem is, that there is no any "Eastern Poland" today.
Former Eastern Poland is now Belarus, Ukraine, Lithuania and Latvia:
Pre-war Lwów (Lviv):
^^^
Lwów was the 3rd largest city of pre-war Poland, culturally the 2nd most important one (after Warsaw), and the main city of Southern Poland (Cracow was 2nd). Ethnically it was a Polish city with a Jewish minority, and it was supposed to stay within Poland even according to the original Curzon Line.
Lwów is only ~70 km from the modern border of Poland. Getting Szczecin (I think that's what Poland got "extra", because Szczecin is located mostly to the west of the Oder River - so it should have stayed with Germany even with those border changes) did not compensate the loss of Lwów.
Bookmarks