Ancient Greek Government
Then in the 300's BC, Greece was conquered by Philip of Macedon, and all of Greece began to be ruled by him as their king (in theory he was only leading a league of Greek city-states, but really he acted like a king). Athens and other Greek city-states still kept their local democracies or oligarchies for local government, but bigger decisions were made by Philip, and then by Philip's son Alexander the Great.
After Alexander died in 323 BC, Greece became a kingdom ruled by a series of Macedonian kings, until it was gradually taken over by the Romans between 200 and 146 BC. From 146 BC on, Greece was a province of the Roman Empire. Even after the Roman Empire in the West collapsed, Greece was still part of the Eastern Empire. In the 1100's and 1200's AD, parts of Greece were taken over by Normans, who built castles and ruled as kings.
And finally, in 1453 AD, the Turks took over and established Greece as a province in their Ottoman Empire; there was not very much change in the system of government from the Roman Empire.
To find out more about these governments, check out these books from Amazon.com or from your library:
Oxford First Ancient History, by Roy Burrell and Peter Connolly (1997). Lively interviews and pictures make the ancient Mediterranean come to life. For middle schoolers.
Cleisthenes: Founder of Athenian Democracy, by Sarah Parton (2002). A biography of the founder of Athenian democracy, for kids.
Athenian Democracy, by A.H.M. Jones (reprinted 1986). One of the great social historians of the 20th century, though this isn't specifically for kids.
Alternatives to Athens: Varieties of Political Organization and Community in Ancient Greece, a collection of essays edited by Roger Brock and Stephen Hodkinson (2003). Each chapter presents a different kind of Greek government: oligarchies, tyrannies, monarchies, and so on. By specialists, for specialists.
Rome, the Greek World, and the East: Government, Society, and Culture in the Roman Empire, by Fergus Millar, Hannah M. Cotton, and Guy Rogers (2004). Millar is an expert on Roman government. This book deals with how the Romans governed in Greece.
Ottoman
Centuries, by Lord Kinross (1979). A short introduction to Ottoman
government, for the non-specialist. It's a little out of date, so it
doesn't consider the role of Islam, or the role of women, as much as
it might have.




