Korea is occupied
1921-22-Washington Conference
1928-Kelloge-Briand Pact (peace pact)
1931-incident in Mukden and Japan invades Manchuria
July 1940-Japan occupies Indochina
1940-U.S. retaliated by prohibiting the exportation of steel, scrap iron, and aviation gasoline to Japan
1940-Japan signs a neutrality treaty with the Soviet Union
December 7, 1941-Pearl Harbor attacked
December 8, 1941-US declares war on Japan
December 11, 1941-Italy and Germany declare war on the US
December-January 1942- Japan took British Hong Kong and the Gilbert Islands (now Kiribati) and Guam and Wake Island (U.S. possessions), and they had invaded British Burma, Malaya, Borneo, and the American-held Philippines.
February 1942-British Singapore fell to them
March 1942-Japan occupied the Netherlands East Indies and landed on New Guinea.
April 9, 1942-The American Philippine forces surrendered at Bataan
May 6, 1942-resistance in the Philippines ended with the surrender of Corregidor
June 4, 1942- Japan loses at the Battle of Midway
August 1942-February 1943-Battle of Guadacanal won by the United States
early 1943-1944-re-taking of islands lost and Allied (US) efforts to secure a stronghold off China in which to launch an offensive on the island of Japan
October 23-25, 1944-3-day Battle for Leyte Gulf won by the Allies secures an area in which to bomb Japan
February 4-11, 1945-Yalta Conference (in the Crimea) Stalin agreed to enter the war against Japan within three months after the German surrender in return for territorial concessions in the Far East.
February-June 1945-Island hopping continues
July 16, 1945-first test bomb dropped at Almagorda
August 6, 1945-Atomic bomb dropped on Hiroshima
August 8, 1945-USSR declared war on Japan on and invaded Manchuria the next day.
August 9, 1945-Atomic Bomb dropped on Nagasaki
August 14, 1945-Japan surrenders
September 2, 1945-Japan signs the formal surrender aboard the USS Missouri