I. Cimon, summoned to the ostracism, was sentenced to its appointed term of banishment--ten years. By his removal, the situation of Pericles became suddenly more prominent and marked, and he mingled with greater confidence and boldness in public affairs. The vigour of the new administration was soon manifest. Megara had hitherto been faithful to the Lacedaemonian alliance--a dispute relative to the settlement of frontiers broke out between that state and Corinth. Although the Corinthian government, liberal and enlightened, was often opposed to the Spartan oligarchy, it was still essential to the interest of both those Peloponnesian states to maintain a firm general alliance, and to keep the Peloponnesian confederacy as a counterbalance to the restless ambition of the new head of the Ionian league. Sparta could not, therefore, have been slow in preferring the alliance of Corinth to that of Megara. On the other hand, Megara, now possessed of a democratic constitution, had long since abandoned the Dorian character and habits. The situation of its territories, the nature of its institutions, alike pointed to Athens as its legitimate ally. Thus, when the war broke out between Megara and Corinth, on the side of the latter appeared Sparta, while Megara naturally sought the assistance of Athens. The Athenian government eagerly availed itself of the occasion to increase the power which Athens was now rapidly extending over Greece. If we cast our eyes along the map of Greece, we shall perceive that the occupation of Megara proffered peculiar advantages. It became at once a strong and formidable fortress against any incursions from the Peloponnesus, while its seaports of Nisaea and Pegae opened new fields, both of ambition and of commerce, alike on the Saronic and the Gulf of Corinth. The Athenians seized willingly on the alliance thus offered to them, and the Megarians had the weakness to yield both Megara and Pegae to Athenian garrisons, while the Athenians fortified their position by long walls that united Megara with its harbour at Nisaea. II. A new and more vast enterprise contributed towards the stability of the government by draining off its bolder spirits, and diverting the popular attention from domestic to foreign affairs. It is necessary to pass before us, in brief review, the vicissitudes of the Persian court. In republican Greece, the history of the people marches side by side with the biography of great men. In despotic Persia, all history dies away in the dark recesses and sanguinary murthers of a palace governed by eunuchs and defended but by slaves.