=180.= War soon broke out between the Spartans and the Argives, in which the Spartan king, Agis, won the important battle of Mantinea, B. C. 418. The oligarchical party, gaining power at Argos, cast off the alliance with Athens, and made a treaty with Sparta. But the nobles abused their power in brutal outrages upon the people, who effected another revolution and obtained possession of the city. By their request, Alcibiades came to their aid with a fleet and army. Though the Spartans and Athenians were nominally at peace, the garrison of Pylos was still committing depredations in Laconia, and Spartan privateers were seriously injuring Athenian commerce. =181.= About this time, an embassy from Sicily besought the aid of the Athenians for the city of Egesta. It was involved in a contest with its neighbor, Selinus, which had obtained help from Syracuse. The “war of races” had, indeed, broken out twelve years before in Sicily, and the Athenians had more than once sent aid to the Ionian cities, Leonti´ni and Camari´na, against their Dorian neighbors, who had joined the Peloponnesian League. Alcibiades threw his whole influence into the cause of Egesta, hoping at once to improve his wasted fortunes with Sicilian spoils, and gratify his ambition with the glory of conquest. He even hoped, beside making Athens supreme over all the Hellenic colonies, to conquer the empire of Carthage, in the western Mediterranean. Nicias and all the moderate party opposed the enterprise. They only prevailed in having an embassy sent to Egesta, to ascertain if its people were really able to fulfill their promise of furnishing funds for the war. The envoys were completely outwitted. In the temple of Aphrodite they saw a magnificent display of vessels which appeared to be solid gold, but were really silver-gilt. They were feasted at the houses of citizens, and were surprised by the profusion of gold and silver plate which adorned their sideboards, not suspecting that the same articles were passing from house to house, and doing repeated service in their entertainment. Sixty talents of silver were paid as a first installment, and the commissioners went home with glowing accounts of Egestan wealth. [Sidenote: B. C. 415.]