Question: Oebares was a Persian officer of Cyrus II of Persia, commonly known as Cyrus the Great  and also called Cyrus the Elder by the Greeks, was the founder of which Empire?
Sentence (from "Battle of Opis"): Cyrus was subsequently proclaimed king of Babylonia and its subject territories, thus ending the independence of Babylon and incorporating the Babylonian Empire into the greater Persian Empire.
Relevant evidence: No