History. The growing power of Athens had frightened other Greek states for years before the Peloponnesian War broke out in 431. During the war, Pericles died in the plague of Athens (429); fortunes of war varied until a truce was made in 421, but this was never very stable and in 415 Athens was persuaded by Alcibiades, a pupil of the Athenian teacher, Socrates, to send a huge force to Sicily in an attempt to take over some of the cities there. This expedition was destroyed in 413. Nevertheless Athens continued the war. In 411 an oligarchy ("rule by a few") was instituted in Athens in an at…