Final answer:
Constantine moved the capital city of his empire to Byzantium, which he renamed Constantinople. This move allowed him to establish control over the eastern part of the empire and have better trade access.
Step-by-step explanation:
Constantine moved the capital city of his empire to Byzantium, which he renamed Constantinople. This new capital became the political and cultural center of the Byzantine Empire. The move was strategic as it allowed Constantine to establish control over the eastern part of the empire and have easier access to trade routes.
Learn more about Constantine's relocation of the Roman Empire's capital city