 Kunyange zvazvo Japan yakanga yatanga kuita nhano yokushora United States pashure pokurambwa kweRacial Equality Proposal, ukama pakati penyika mbiri idzi hwaiva hwomutsa zvakakwana zvokuti vakaramba vari shamwari dzokutengeserana. Kusawirirana hakuna kukura zvakakomba kutozosvikira kupinda kweJapan muManchuria muna 1931. Mumakore gumi akatevera, Japan yakawedzera kupinda muChina, zvichitungamirira kuHondo yeChipiri yeChina neJapan muna 1937. Japan yakashandisa nhamburiko huru kuedza kupatsanura China uye yakaedza kuwana zviwanikwa zvakazvimirira zvakakwana kuti iwane rukundo pachitsuwa chikuru. Basa Rokuchamhembe rakagadzirirwa kubatsira nhamburiko idzi. 