Ancient Greece leaders and what was expected of the citizens?

Greece was not a country, it was an ethnic classification, and covered hundreds of independent city-states located around the Mediterranean and Black Seas. Each had its own leaders, who morphed from kings to aristocrats and tyrants to elected leaders as the political systems evolved.

Well known leaders included Cleisthenes, Ephialtes and Pericles who brought in democracy in Athens; kings and war leaders Cleonomes, Leonidas and Pausanias of Sparta; Epaminondas and Pelopidas generals of Thebes.