Modernism Timeline By theman4 Jun 28, 1914 Great Britain enters World War I Period: Jun 28, 1914 to Nov 11, 1918 World War I Sep 1, 1939 Germany invades Poland Period: Sep 1, 1939 to Aug 14, 1945 WWII Aug 6, 1945 Drop of the first Atom Bomb Oct 4, 1957 Sputnik 1 is put in space Beginning of Space Race Dec 21, 1969 Apollo landing
