18 сент 1931 г. - Mukden (Shenyang) Incident. In this northeastern Chinese city, an explosion damages a Japanese-owned railroad tracks. Subsequently Japanese military seized the province and the area was declared to be a new autonomous state, Manchukuo. Both China and Japan had signed the 1928 Kellogg-Briand Pact (see 07/24/29) , but the League of Nations was unable to act