hostilities ended in the conquest of Corcyra by the Corinthian tyrant Periander who induced his new subjects to join in the colonization of Apollonia and Anactorium. The island soon regained its independence and henceforth devoted itself to a purely mercantile policy. During the Persian invasion of 480 BC it manned the second largest Greek fleet (60 ships), but took no active part in the war. In 435 BC it was again involved in a quarrel with Corinth over the control of Epidamnus, and sought assistance from Athens (see Battle of Sybota). This new alliance was one of the chief immediate causes of the Peloponnesian War, in which Corcyra was of considerable use to the Athenians as a naval station, but did not render much assistance with its fleet. The island was nearly lost to Athens by two attempts of the oligarchic faction to effect a revolution; on each occasion the popular party ultimately won the day and took a most bloody revenge on its opponents (427 BC and 425 BC).
During the Sicilian campaigns of Athens Corcyra served as a supply base; after a third abortive rising of the oligarchs in 410 BC it practically withdrew from the war. In 375 BC it again joined the Athenian alliance; two years later it was besieged by a Spartan force, but in spite of the devastation of its flourishing countryside held out successfully until relieved. In the Hellenistic period Corcyra was exposed to attack from several sides.
In 303 BC after a vain siege by Cassander, the island was occupied for a short time by the Lacedaemonian general Cleonymus of Sparta, then regained its independence and later it was attacked and conquered by Agathocles. He offered Corfu as dowry to his daughter Lanassa on her marriage to Pyrrhus, King of Epirus. The island then became a member of the Epirotic alliance. It was then perhaps that the settlement of Cassiope was founded to serve as a base for the King of Epirus' expeditions. The island remained in the Epirotic alliance until 255 BC when
