 Nyorai kuenderera mberi kweiyi ndima - Kutanga kwezana ramakore rechi 20 kwakaona nguva yerusununguko rweTaishō 19121926 yakafukidzwa nekuwedzera kuwedzera uye hondo. Hondo yeNyika I yakabvumira Japan, iyo yakabatana nerutivi rweVasonganiri vakakunda, kutora zvinhu zveGermany muPacific neChina. Makore okuma1920 akaona kuchinja kwezvematongerwe enyika kune chokuita nehurumende, nguva yokusava nomutemo pashure peGreat Tokyo Earthquake ya1923, kupfuudzwa kwemitemo inopesana nevanopikisa mune zvematongerwe enyika, uye kuedza kuuraya hurumende kwakatevedzana. Iyi nhano yakakurumidza mukati mema1930, ichibereka nhamba yemapoka emarudzi akasimba ayo akagoverana ruvengo rwedemokrasi yorusununguko uye kuzvipira kukuwedzera muAsia. Muna 1931, Japan yakapinda muManchuria ndokugara mairi; pashure pokutsoropodzwa kwenyika yose kwokupamba, rakabva muSangano reMarudzi makore maviri gare gare. Muna 1936, Japan yakasaina Anti-Comintern Pact neNazi Germany; Chibvumirano cheTripartite cha1940 chakaita kuti ive imwe yeAxis Powers. 