The Greco-Persian Wars appear in The Federalist not as a battle narrative but as a political test: even facing Persia, the Greek cities failed to act together. Their inability to convert a common external danger into durable cooperation supports the argument that a confederacy of sovereign states can remain weak, divided, and vulnerable despite its formal union.

The Greek Confederacy and Its Promise

The account places the wars within the history of the Greek republics associated under the Amphictyonic council. This confederacy is introduced as a significant ancient example and an instructive parallel to the American confederation. Its members retained their independence and sovereignty while holding equal votes in a federal council, which could deliberate on common welfare, declare and conduct war, arbitrate disputes between members, fine an aggressor, and call upon the confederacy’s force against disobedience.

The arrangement therefore possessed, on paper, instruments for both common defense and internal order. The council’s responsibilities also included guardianship of religion and the wealth of the temple at Delphi. Its members swore to defend the united cities and punish violations of their obligations. The contrast between these stated powers and the confederacy’s eventual failure gives the Greek example its argumentative force: constitutional authority did not ensure effective collective action.

A Common Enemy, No Common Action

The Greek cities did not act in concert even amid defensive and dangerous wars with Persia and Macedon. The narrative stresses not simply a failure in one campaign, but a persistent condition: some members were repeatedly deceived or hired by the common enemy, while intervals between foreign wars brought domestic convulsions and bloodshed. A shared threat thus failed to overcome the political divisions within the confederacy.

The aftermath of the war with Xerxes makes those divisions concrete. The Lacedaemonians proposed expelling cities they judged unfaithful during the war. Athens opposed the measure after calculating that Sparta would lose fewer allies and might thereby control public deliberations. The dispute exposed both the ambition and mutual suspicion of the leading cities, as well as the diminished standing of smaller members. Though the system gave those members equal formal status, in practice they had become satellites of the dominant powers.

From Victory to Rivalry and Ruin

The account presents the peace after the Greek success against Persia as a missed opportunity for institutional repair. The Abbé Millot’s judgment, as reported in the text, is that the Greeks should have used that peace to establish a closer union. Instead, Athens and Sparta, elevated by victory and glory, became rivals and then enemies. Their mutual fears, jealousies, hatreds, and injuries culminated in the Peloponnesian War, which ended in the ruin and enslavement of the Athenians who had begun it.

This sequence reverses the promise of common victory. The danger from Persia had not produced a stronger political bond; success instead magnified the rivalry between the leading cities. The resulting conflict demonstrates how a weak union may survive an external emergency yet remain unable to prevent internal competition from generating further calamity.

The Wars as a Federalist Warning

The Greek example forms part of a broader comparison of confederacies. The Federalist argues that a union whose central authority operates through member governments, rather than directly upon individuals, can be left unable to regulate its members. In the Greek case, the council’s extensive formal powers stand against the history of domination by stronger cities, disunity in war, and recurrent domestic violence.

The decisive lesson is not that common defense is unnecessary, but that a nominal alliance cannot make its members reliably act together. The wars against Persia expose the gap between the confederacy’s promise and its operation: equality in the council and oaths of mutual defense coexist with defection, rivalry, and the subordination of weaker states. In the book’s argument, that gap makes the Greek experience a warning about the political consequences of a union too weak to secure concerted action.