Sep 1913Russians discover & claimEmperor Nicholas II Land
Jul 1914Outbreak ofWWI in Europe
Aug 1916–Apr 1917US buys DanishWest Indies
20 Sep 1916Russia claims the Arcticislands to its north,including Wrangel
Jan 1917US recognizesDanish claimto Greenland
Mar 1917February Revolutionin Russia
6 Apr 1917US declares waron Germany