Events that Led to WWII By AlexM1 Apr 20, 1889 Hitler's Birth Hitler is born in Austria. Period: Jul 28, 1914 to Nov 11, 1918 WWI WWI started on July 28, 1914, and ended on Veteran's Day 1918. Jul 7, 1932 Nazis Receive Majority Vote in Election of 1932 Nov 8, 1932 Franklin Roosevelt is Elected Another Term Jan 30, 1933 Hitler is Appointed as Chancellor Mar 1, 1933 First Concentration Camps Open Mar 15, 1939 Germans Troops Move in to Czechoslovakia May 22, 1939 Germany and France Form Alliance Sep 1, 1939 Germany Invades Poland Sep 3, 1939 Start of World WWII Dec 8, 1941 US Enters WWII After Pearl Harbor Attack