World War II By crim10 Jun 28, 1918 Signing the treaty of Versaillesv Nov 11, 1918 World War 1 ends with Germany defeats Apr 28, 1919 League of nations founded Jul 21, 1921 Adolf Hitler becomes leader of National Socialist (Nazi) Party. Nov 8, 1923 Hitlers Beer Hall Putsch Jul 18, 1925 Hitler's book "Mein Kampf" published. Sep 8, 1926 Germany admitted to League of Nations.