This is true because even if that grandparent was to change from Jewish to Christianity they would still be considered Jewish and the Nazis thought it was passed down to the grandchildren.
D. the last one!!!! the nuremberg trials
It was a chain reaction. Long story short, the countries were pulled into the war because of agreements they had with their allies. This treaty is what caused the countries to enter WWI, to protect and defend their allied countries who were already in the war.
Authoritarian states rose in Eastern Europe because they were small new countries without capitol t develop industry. Haves and Have-nots and most did not have experience with democracy.
