Emva koVukelo-mBuso lwaseJamani ngo-1918–1919 nangokunikezela komkhosi okwakulandelelana kwiMfazwe yoku-1 yeHlabathi, ubuKumkani basuswa kwafakwa ipalamente yeriphabhlikhi kaWeimer ngo-1918 yaza yalahlekelwa yinxalenye yeengingqi zayo kwisivumelwano soxolelwaniso saseVersailles. Nangona ngeli xesha yayitshila phambili kwimibandela yophando nakweyamasiko, iJamani yathi yathwaxwa kanobom kukugungqa kwezoqoqosho nakwezopolitiko kwathi kona ngexesha lembandezelo eNkulu kwanga kuthelwe ityuwa enxebeni. Ukufumaneka kwesiZwe sesiThathu okanye koburhulumente baseNazi]] ngo-1933 ekugqibeleni kwakhokelela kwiMfazwe yesi-2 yeHlabathi nakwi''Holocaust''. emva ko-1945, iJamani yahlulwa-hlulwa yaza yahlalwa zizizwe zeMvisiswano kumazwe amabini, Kwimpuma-Jamani nakwiNtshona-Jamani. Ngo-1990, ilizwe laphinda lamanyana.