When and who moved the capital of the Roman Empire to Constantinople?

The Roman emperor Constantine on May 11, 330, decided to move the eternal capital of the Roman Empire from Rome to the new city of Constantinople. The main purpose of this transfer of the capital, as contemporaries said, was that the emperor decided that the old capital could no longer be a stronghold of the state due to internal contradictions, and the new city would allow the empire to breathe new life. As time will show, Constantine was right, the Western Roman Empire will cease to exist much earlier.