Augustus Ends the Republic
After a century of civil war and Caesar's assassination, his young heir Octavian outmaneuvered every rival to become Augustus, Rome's first emperor — while carefully preserving the Republic's old titles and forms as a flattering disguise for one-man rule. He gave a war-weary world peace, and Rome barely noticed it had traded its liberty away. It is the script exhausted societies keep re-running: after enough disorder, people will hand near-absolute power to whoever promises to make it stop — as they later would to Napoleon and the strongmen of the 1930s.
Prolonged chaos creates demand for order; a single figure concentrates power by promising to supply it.