I know I'm replying to a 7 year old comment but for those finding this quiz now: the Baltic states were not part of the USSR during WW2. They became independent after WW1 and were occupied by the USSR in 1940, then by the Germans from 1941-1944; after the end of the war they were then incorporated into the USSR.
Funny how the Japanese have gotten almost complete forgiveness from the West despite being worse than the Nazis, while the Germans are still self-flagellating. Shows the ethnocentrism of the West.