At Sparta the fatal news was not permitted to interrupt the festival then in progress. All signs of mourning were forbidden, except on the part of those whose relatives had survived the defeat. The disaster was, nevertheless, the greatest that had ever befallen Sparta. Her influence was destroyed, even over the Peloponnesian cities. Her dependencies north of the Corinthian Gulf were divided between the Thebans and Jason, tyrant of Pheræ, in Thessaly, a man of singular talent and unbounded ambition, who aimed at the sovereignty of all Greece. The Thebans had courted his alliance, but they began to be alarmed by the extent of his projects, and all Greece was relieved when he was assassinated in 370. The Spartan sovereignty, which had lasted thirty-four years since the battle of Ægos-Potami, now gave way to the THEBAN SUPREMACY (B. C. 371-362). =237.= The Mantineans seized the occasion to revenge their former wrongs, and besought the aid of Epaminondas. He entered Arcadia with an army near the end of the year 370, and was joined by Argives and Eleans, who increased his number to 70,000 men. By the entreaties of his allies, he marched into Laconia, and advanced upon Sparta itself. During all the centuries that the fame of Spartan valor had held Greece and Asia in awe, the Spartan women had never seen an enemy in arms, and the unwalled city was now filled with terror. But the energy of old King Agesilaus was equal to its defense. He repulsed the cavalry of Epaminondas, who retired down the valley of the Eurotas, burning and plundering as he went, and then returned to Arcadia. =238.= The main objects of his expedition were yet to be fulfilled. A union of Arcadian towns had already been formed, which Epaminondas wished to organize and strengthen. Lest jealousy should be excited by the choice of any existing place as capital of the league, a new city, called Megalop´olis, was built, and peopled by colonists from forty towns. Here a congress of deputies, called the “Ten Thousand,” was to be regularly convened; and a standing army of deputies from the various cities was also raised. =239.= A still more cherished plan was the restoration of the Messenians. For three hundred years this noble race had been fugitive and exiled, while its lands were in the possession of the Lacedæmonians. The exiles were now recalled, by the letters of Epaminondas, from the shores of Italy, Sicily, Africa, and Asia, and eagerly sprang to arms for the recovery of their ancient seats. The citadel of Ithome was fortified anew, and the town of Messe´ne, which arose upon the western slope of the mountain, was protected by strong walls. The Messenian territories extended southward to the gulf which bore their name, and northward to Elis and Arcadia. [Sidenote: B. C. 369.]