Sparta

Sparta was a prominent city-state in Laconia in ancient Greece. In antiquity, the city-state was known as Lacedaemon, while the name Sparta referred to its main settlement on the banks of the Eurotas River in the Eurotas valley of Laconia, in south-eastern Peloponnese. Around 650 BC, it rose to become the dominant military land-power in ancient Greece.

Given its military pre-eminence, Sparta was recognized as the leading force of the unified Greek military during the Greco-Persian Wars, in rivalry with the rising naval power of Athens. Sparta was the principal enemy of Athens during the Peloponnesian War, from which it emerged victorious after the Battle of Aegospotami.

Source: Wikipedia