WW2 By gstewart7 Nov 11, 1918 End of WW1 Period: Nov 11, 1918 to Sep 1, 1930 Interwar Years Period: 1929 to 1939 Great Depression 1933 Hitler became chancellor Sep 1, 1939 Invasion of Poland Period: Sep 1, 1939 to Feb 9, 1945 WW2 Dec 7, 1941 Bombing of Pearl Harbour