A world of city-states
Ancient Greece was not a single country governed from Athens. Communities called poleis controlled their own territory, laws, cults and political institutions, and their citizens defined freedom through membership of a particular city.
Athens and Sparta became the most famous poleis, but Corinth, Thebes, Miletus and hundreds of smaller communities followed different paths. Political participation remained restricted: women, enslaved people and resident foreigners were excluded from citizenship in most states.
War with Persia
The Persian invasions of 490 and 480–479 BC forced rival communities into temporary cooperation. Marathon, Thermopylae, Salamis and Plataea became powerful memories, although Greek forces also fought for Persia and the conflict was never a simple clash of united peoples.
Athens converted leadership of the Delian League into an empire funded by allied tribute. That wealth supported ships, public pay and building on the Acropolis, while allies who tried to leave the league could face coercion.
Athens, Sparta and civil war
The Peloponnesian War began in 431 BC after years of tension between the Athenian and Spartan alliances. Plague, revolt, naval campaigning and the disastrous Athenian expedition to Sicily prolonged a conflict that ended with Athens' surrender in 404.
Spartan victory did not create lasting stability. Thebes briefly broke Spartan dominance, Persian diplomacy shaped Greek affairs, and repeated warfare drained the capacity of the southern poleis to resist Macedon.
Macedon and the Hellenistic kingdoms
Philip II defeated a Greek coalition at Chaeronea in 338 BC and created the framework inherited by his son Alexander. Alexander destroyed the Persian Empire but died in Babylon in 323 without a settled adult successor.
His generals divided the conquests into competing kingdoms. Greek became a language of administration and scholarship across a vast region, but local societies did not simply become Greek; Hellenistic culture developed through exchange, negotiation and unequal power.
Why It Matters
The Greek past matters because later ideas about politics, empire and culture were built from a diverse and contested history rather than a single civilisation moving smoothly toward modern democracy.