Early World War II Timeline By Kingmarcus Sep 19, 1931 Japan attacks Manchuria https://en.wikipedia.org/wiki/Japanese_invasion_of_Manchuria Feb 24, 1933 japan leaves league of nations https://www.upi.com/Archives/1933/02/24/Japan-stuns...league/2231840119817 Oct 10, 1933 Germany leaves league of nations https://www.wdl.org/en/item/11598/ Jul 7, 1937 japan attacks china https://www.britannica.com/event/Second-Sino-Japanese-War Mar 12, 1938 Germany takes over Austria https://www.britannica.com/event/Second-Sino-Japanese-War Jul 30, 1939 Germany take over cezechoslovakia https://en.wikipedia.org/wiki/German_occupation_of_Czechoslovakia Oct 6, 1939 Germany invades poland https://www.history.com/this-day-in-history/germany-invades-poland