In the Archaic Era of Greek history the aristocratic control of government was undermined by the increasing wealth and internal security of the city-states. Democracy was one of many new forms of government to emerge, and until the fifth century a wide variety of models of democratic government were tried, before the form of democracy found in Athens became the model on which newly established democracies founded their constitutions. In The Origins and Development of Ancient Greek Democracy, James L. O'Neil examines the origins of democracy in Ancient Greece, not only in Athens, but also in other Greek states including Syracuse, Rhodes, and the Hellenistic Federal states, and traces its development into the most common form of government found in Greece by the mid-fourth century.