Answer:
Most Greek city-state followed the oligopoly.In 506 BC,the Athenains set up democracy system.The word democracy is formed from Greek words"demos"(means people)and"kratein(means rule),which means ruled by people.The government was set up through elections
These are the three different styles of government most city-state have:
-monarchy:a king ruled the city state
-oligopoly:the city state is ruled by a small group of people
-democracy:the city-state is ruled by all people.Matters were decided by all people