Good quiz, though I wouldn't really count the Weimar Republic (maybe Saudi Arabia, USSR and Yugoslavia too, not sure about those ones though) since they didn't gain independence the same way the other ones did (Weimar Rep. is just a different government and it was still called Germany at that time). Also, you missed Danzig and the Saar Basin (plus maybe some temporary breakaway states like Transcaucasia, which got gobbled up by other countries).