Nyorera kupfuurira kweiyi ndima - Muna 1941, U.S. yakaita nhevedzano yezvisarudzo zvekutsigira China muhondo yayo neJapan: Zvinhu zveLend Lease zvakapihwa mushure mekunge Mutungamiri Franklin D. Roosevelt azivisa kudzivirirwa kweChina kuve kwakakosha kudziviriro yeUnited States. Mukati mezhizha, sezvo Japan yakatamira kumaodzanyemba kupinda muFrench Indo-China, U.S., Britain neNetherlands zvakatanga kurambidza kutengeswa kweoiri kuJapan, kuchigura 90% yezvinhu zvayo. Chibvumirano chacho chakatyisidzira kushanda kweHondo yeKwantung, iyo yakanga ine varwi vanopfuura miriyoni imwe vakapararira muChina. Japan yakapindura nechisimba chakanyatsorongwa pana December 7/8, panguva imwe chete ichirwisa Pearl Harbor, Philippines, Malaya
, Singapore, Hong Kong, Guam, Wake Island, uye Thailand.