Original sentence: The Byzantine Empire is the Eastern Roman Empire.The Byzantine Greek as a distinct ethnic group living in the Byzantine Empire.The population of the Byzantine Empire, including all separate ethnic and tribal groups living there.the continuation of the Roman Empire after the fall of its western half
Edited sentence: Byzantine Empire, the conventional term of reference for the continuation of the Roman Empire in the east after the fall of the western half.The Population of the Byzantine Empire, including the distinct Byzantine Greek ethnic class