In short and simple terms, the phrase "great empire" refers to a powerful and vast kingdom or nation. It suggests a strong and influential authority that has control over a large area or a significant number of people.
Sentences with «great empire»
And what of that other great empire far to the north? (newscientist.com)
«The two great Empires of Lilliput and Blefuscu... have... been engaged in a most obstinate War for six and thirty Moons past. (redeeminggod.com)
Alcorta notes that the existence of great empires in tropical, disease - rich areas — such as the Maya in the Yucatán Peninsula — seems to fly in the face of Fincher's findings. (sciencemag.org)