The triumph of Sparta has established her empire among the Greeks; she used her power with a tyranny infinitely more galling than the sway of Athens. The Spartan character had become greatly demoralised. Agesilaus, who succeeded to the kingship, set on foot ambitious projects for a Greek conquest of Asia; but Greece began to revolt against the Spartan dominion. Thebes and other cities rose, and called for help from Athens, their former foe. In the first stages of the ensuing war, of which the most notable battle was Coronea, Sparta maintained her supremacy within the Peloponnesus, but not beyond. Athens obtained the countenance of Persia, and the counter-diplomacy of Sparta produced the peace known by the name of the Spartan Antalcidas, establishing generally the autonomy of Greek cities. But this in effect meant the restoration of Spartan domination. In course of time, however, this brought about the defiance of Spartan dictation by Thebes and the tremendous check to her power inflicted at the battle of Leuctra, by Epaminondas the Theban, whose military skill and tactical originality there overthrew the Spartan military prestige. As a consequence, half the Peloponnese itself broke away from Sparta; a force under Epaminondas aided the Arcadians, and the Arcadian federation was established. Hellenic Sicily during these years was having a history of her own of some importance. Syracuse, after her triumph over the Athenian forces, continued the contest with her neighbours, which had been the ostensible cause of the Athenian expedition. But this was closed by the advent of fresh invaders, the Carthaginians, who renewed the attack repulsed at Himera. Owing to the disaster to Athens, her fleets were no longer to be feared by Carthage as a protection to the Hellenic world; and for two centuries to come, her interventions in Sicily were incessant. Now, the presence of a foreign foe in Sicily gave intriguers for power at Syracuse their opportunity, of which the outcome was the subversion of the democracy and the establishment of Dionysius as despot. His son, Dionysius II., succeeded, and was finally ejected by the Corinthian Timoleon, who, after a brilliant career of victories as Syracusan general against Carthage, acted as general liberator of Sicilian cities from despotisms, laid down his powers, and was content with the position, not of despot, but of counsellor, to the great prosperity of Sicily as a whole.