Which statement summarizes how the Roman Empire formed? (1 point)

O The Roman Empire formed due to the conflict among the First Triumvirate that made Octavian the first emperor of Rome
• The Roman Empire formed when Octavian defeated Antony at the Battle of Actium, making Octavian the first emperor of Rome.
• The Roman Empire formed due to the march over the Rubicon river, which made Octavian the first emperor of Rome.
O The Roman Empire formed due to the first civil war and the death of Caesar, which made Octavian the first emperor of Rome