Mezue nkebi ahịrịokwu a: Malite n'afọ 1931, ihe bịara na-esikwu ike. Omume ndị Japan megide China na 1931 na karịsịa mgbe 1937 gasịrị n'oge Agha nke Abụọ nke China na Japan mere ka United States kwụsị mmanụ na ígwè Japan chọrọ maka mmeri ndị agha ha. Japan zaghachiri mwakpo ndị Allies, gụnyere mwakpo mberede na Pearl Harbor na Disemba 7, 1941, nke merụrụ nnukwu ọdụ ụgbọ mmiri US na Pearl Harbor, na-emepe ebe nkiri Pacific nke Agha Worldwa nke Abụọ. United States tinyere ego buru ibu n'ike agha mmiri ma jiri usoro mebie ikike mwakpo nke Japan ka ha na-agagharị n'àgwàetiti gafee Pacific. Iji manye ndị Japan ka ha chịlie aka elu, ndị America ji nlezianya gbaa obodo ndị dị na Japan bọmbụ, bụ́ nke ruru n'ogologo ya mgbe e ji bọmbụ atọm gbaa Hiroshima na Nagasaki n'August 1945.
Japan chịliri aka elu, ma bụrụkwa nke ndị United States ji agha were afọ asaa, n'oge nke ndị America nọ n'okpuru Ọchịagha Douglas MacArthur wepụrụ ihe agha ma wughachi usoro akụ na ụba na nke ndọrọ ndọrọ ọchịchị iji gbanwee Japan ka ọ bụrụ ọchịchị onye kwuo uche ya.