Why did Rome pass from a republic to an empire?

Rome became an empire because at that time there were people in the Senate who supported the policy of one-man rule, while the Republicans were defeated. Thus, in 27 BC, the first emperor in Rome was elected. It was Octavian Augustus. In this connection, the formation of the Roman Empire took place. During the years of Augustus’s reign, she was able to reach her heyday. In total, August ruled until 14 AD.