Ka cika wannan magana: Daga shekara ta 1931, tashin hankali ya ƙaru. Ayyukan Jafananci a kan China a 1931 kuma musamman bayan 1937 a lokacin Yaƙin Sino-Japan na biyu ya sa Amurka ta yanke man fetur da ƙarfe da Japan ke buƙata don cin nasarar soja. Japan ta amsa da hare-hare a kan Allies, ciki har da mamakin kai hari a kan Pearl Harbor a ranar 7 ga Disamba, 1941, wanda ya yi mummunar lalacewar sansanin sojan ruwa na Amurka a Pearl Harbor, yana buɗe wasan kwaikwayo na Pacific na yakin duniya na biyu. Amurka ta yi babban jari a cikin karfin ruwa kuma ta lalata damar da Japan ke da ita yayin da take tsallake tsibirin a fadin Pacific. Don su tilasta wa mutane su miƙa kai, Amirkawa suka yi ta kai harin bama-bamai a kan biranen Japan, wanda ya kai ga jefa bama-bamai a kan Hiroshima da Nagasaki a watan Agusta na shekara ta 1945.
Kasar Japan ta mika wuya, kuma ta yi shekaru bakwai da Amurka ta mamaye ta, a lokacin da Amurka ta mamaye karkashin Janar Douglas MacArthur ta kawar da bangaren soja kuma ta sake gina tsarin tattalin arziki da siyasa don sauya Japan zuwa dimokiradiyya.