 Nyorai kupfuurira kweiyi ndima - Pashure pokukunda Willkie, Roosevelt akawana tendero yeCongress yepurogiramu yeLend-Lease, iyo yakagadzirirwa kubetsera United Kingdom muhondo yayo mukurwisana neNazi Germany. Pashure pokunge Germany yatanga hondo neSoviet Union, Roosevelt akawedzera Lend-Lease kuSoviet Unionwo. MuAsia, Roosevelt akapa rubatsiro kuRepublic of China, iyo yakanga ichidzivisa kupindirwa neUmambo hweJapan. Mukupindura kubatwa kweFrench Indochina neJapan muna July 1941, Roosevelt akawedzera kurambidzwa kutengeserana kweJapan kuti agure mafuta ayo Japan yaida nokukurumidza nokuda kwezvikepe zvayo. Pashure pokuedza kuvhurazve kutengeswa kwepeturu, Japan yakarwisa ngarava dzeUnited States dzakanga dzakamiswa paPearl Harbor. Chichipindura, Congress yakazivisa hondo kuJapan uye, mazuva mashomanene gare gare, kuGermany neItaly. United States yakabatana neBritain neSoviet Union pakuva nhengo huru yeAllied Powers. United States yakatsigira mari yakawanda yenhamburiko dzokurwa dzevamwe vavakwanyina, uye yakapa zvombo, zvokudya namafuta. Mukubvunzana navakuru vake veHondo neVafambisi veGungwa uye mutungamiriri wehurumende yeBritain Winston Churchill, Roosevelt akasarudza zano rokutanga reEurope, iro rakanangidzirwa pakukunda Germany pamberi peJapan. Zvisinei, mukuita, muna 1942 na 1943 U.S. yakaisa ngwariro pakurwisana neJapan. 