Years of Crisis: Aggressors Invade Nations By fechtertyson Jan 1, 1922 Japan signs a treaty with China to respect China's borders. Period: Jan 1, 1922 to Dec 31, 1939 Agressors Invade Nations Jan 1, 1931 Japan seizes Manchuria Jan 1, 1933 Japan withdraws from the League of Nations Jan 1, 1937 Japan Invades China
