vaded the Persian provinces in Anatolia, a period which marks the Spartan Hegemony.
During the Corinthian War Sparta faced a coalition of the leading Greek states: Thebes, Athens, Corinth, and Argos. The alliance was initially backed by Persia, whose lands in Anatolia had been invaded by Sparta and which feared further Spartan expansion into Asia. Sparta achieved a series of land victories, but many of her ships were destroyed at the battle of Cnidus by a Greek-Phoenician mercenary fleet that Persia had provided to Athens. The event severely damaged Sparta's naval power but did not end its aspirations of invading further into Persia, until Conon the Athenian ravaged the Spartan coastline and provoked the old Spartan fear of a helot revolt.
After a few more years of fighting, in 387 BC the Peace of Antalcidas was established, according to which all Greek cities of Ionia would return to Persian control, and Persia's Asian border would be free of the Spartan threat. The effects of the war were to reaffirm Persia's ability to interfere successfully in Greek politics and to affirm Sparta's weakened hegemonic position in the Greek political system. Sparta entered its long-term decline after a severe military defeat to Epaminondas of Thebes at the Battle of Leuctra. This was the first time that a Spartan army lost a land battle at full strength.
As Spartan citizenship was inherited by blood, Sparta now increasingly faced a helot population that vastly outnumbered its citizens. The alarming decline of Spartan citizens was commented on by Aristotle.
Hellenistic and Roman Sparta
Sparta never fully recovered from the losses that the Spartans suffered at Leuctra in 371 BC and the subsequent helot revolts. Nonetheless, it was able to continue as a regional power for over two centuries. Neither Philip II nor his son Alexander the Great attempted to conquer Sparta itself.
During Alexander's campaigns in the east, the Spartan king,
