conglomerate, imperium, imperial, dynasty, republic, overlord, Dominion, conquest, hegemony, oligarchy, more...

colony, province, territory, dependency, state

Roman, British, Mongol, Ottoman, Spanish, Portuguese, Chinese, Incan, Aztec, more...

roman, great, whole, british, vast, turkish, colonial, old, ottoman, persian, later

the ottoman ,   vast realm,   ancient kingdom,   asian kingdom,   emperors' domains,   imperial period,   former kingdom,   its colonies,   longtime eur. realm,   old african kingdom,   star wars state