Kyklos

The Kyklos (Ancient Greek: κύκλος, "cycle") is a term used by some classical Greek authors to describe what they saw as the political cycle of governments in a society. It was roughly based on the history of Greek city-states in the same period. The concept of "The Kyklos" is first elaborated in Plato's Republic, chapters VIII and IX. Polybius calls it the anakyklosis or "anacyclosis".