After the conclusion of the war with Xerxes, it appears that the Lacedaemonians required that a number of the cities should be turned out of the confederacy for the unfaithful part they had acted. The Athenians, finding that the Lacedaemonians would lose fewer partisans by such a measure than themselves, and would become masters of the public deliberations, vigorously opposed and defeated the attempt. This piece of history proves at once the inefficiency of the union, the ambition and jealousy of its most powerful members, and the dependent and degraded condition of the rest. The smaller members, though entitled by the theory of their system to revolve in equal pride and majesty around the common center, had become, in fact, satellites of the orbs of primary magnitude.
Had the Greeks, says the Abbé Milot, been as wise as they were courageous, they would have been admonished by experience of the necessity of a closer union, and would have availed themselves of the peace which followed their success against the Persian arms, to establish such a reformation. Instead of this obvious policy, Athens and Sparta, inflated with the victories and the glory they had acquired, became first rivals and then enemies; and did each other infinitely more mischief than they had suffered from Xerxes. Their mutual jealousies, fears, hatreds, and injuries ended in the celebrated Peloponnesian war; which itself ended in the ruin and slavery of the Athenians who had begun it.
As a weak government, when not at war, is ever agitated by internal dissentions, so these never fail to bring on fresh calamities from abroad. The Phocians having ploughed up some consecrated ground belonging to the temple of Apollo, the Amphictyonic council, according to the superstition of the age, imposed a fine on the sacrilegious offenders. The Phocians, being abetted by Athens and Sparta, refused to submit to the decree. The Thebans, with others of the cities, undertook to maintain the authority of the Amphictyons, and to avenge the violated god. The latter, being the weaker party, invited the assistance of Philip of Macedon, who had secretly fostered the contest. Philip gladly seized the opportunity of executing the designs he had long planned against the liberties of Greece. By his intrigues and bribes he won over to his interests the popular leaders of several cities; by their influence and votes, gained admission into the Amphictyonic council; and by his arts and his arms, made himself master of the confederacy.
The Union here was far more intimate, and its organization much wiser, than in the preceding instance. It will accordingly appear, that though not exempt from a similar catastrophe, it by no means equally deserved it.
The cities composing this league retained their municipal jurisdiction, appointed their own officers, and enjoyed a perfect equality. The senate, in which they were represented, had the sole and exclusive right of peace and war; of sending and receiving ambassadors; of entering into treaties and alliances; of appointing a chief magistrate or praetor, as he was called, who commanded their armies, and who, with the advice and consent of ten of the senators, not only administered the government in the recess of the senate, but had a great share in its deliberations, when assembled. According to the primitive constitution, there were two praetors associated in the administration; but on trial a single one was preferred.