(historical) conquest of barbarians

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

history / the study of history

ancient tribes in eastern China / level (flat and low) / levelled destruction

(historical) Synonym of 蝦夷 (Ezo): an ancient ethnic group attested in the Nihon Shoki that once lived on what is now the Kantō, Hokuriku and Tōhoku regions, likely as far as Hokkaido, possibly related to the Ainu people; dubbed as "barbarians" or "savages" by the Yamato

a surname / alternative spelling of 恵比須 (Ebisu), a Shinto god

those people with differing languages and/or cultures / a barbarian, savage; uncivilized people (living to the east of ancient Imperial China; included Japan) / a neutral (position)

a piece of research, a study, investigation