The correct anwer is A. He believed eastern roman power was on the decline, while western roman power was on the rise.
Step-by-step explanation
Constantine I was born in 272 and died in 337, he was the emperor of the Roman Empire from 306 to 337 and has gone down in history as the first Christian emperor. Constantine stood out for the numerous administrative, military, economic, and political-religious reforms, especially those related to the Christianization of the empire. He promoted adequate structures to preserve the unity of the Church, as a way of preserving the unity of the state and legitimizing its monarchical configuration, without excluding other religious motivations of a personal nature. The 330 changed the capital of the empire from Rome to Byzantium, which he called Constantinople, which meant a break with tradition, despite wanting to emphasize the aspect of Christian capital, he also thought that with this change he could strengthen the presence of the empire in the East which was in decline while in the West, Rome had a fairly solid establishment. So, the correct anwer is A. He believed eastern roman power was on the decline, while western roman power was on the rise.