Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: The city is what later evolved to be the center of the Byzantine Empire (the Greek-speaking Roman Empire of late Antiquity and the Middle Ages) under the name of Constantinople.

The city is what later came to be the center of the Byzantine Empire under the name of Constantinople.