The argument in one screen
Union creates lasting peace
Jay opens with Queen Anne's pro-union argument that political union removes internal jealousies and creates the strength needed to resist common enemies.
Confederacies become jealous neighbors
Separate sovereignties do not stay neutral and affectionate. They become border rivals with conflicting interests, fears, and incentives.
Foreign alliances follow disunion
Jay warns that divided confederacies would drift toward different foreign partnerships, making genuine internal alliance harder and foreign manipulation easier.
Foreign help is easy to admit, hard to remove
One of Jay's sharpest warnings is that foreign fleets and armies can enter under the guise of alliance more easily than they can ever be made to leave.
Why Jay turns to British history
Federalist 5 continues the same theme as Federalists 2, 3, and 4, but with a different method. Instead of listing commercial rivalries or treaty problems, Jay turns to historical analogy. He asks readers to look at the long quarrels among the peoples of Britain and then imagine what would happen if America split itself into several nations.
The lesson he wants them to draw is not subtle. Even when neighboring peoples have strong shared interests, they do not automatically live in trust. Foreign powers inflame their jealousies, stronger regions frighten weaker ones, and what should have been natural neighbors become suspicious competitors.
“An entire and perfect union will be the solid foundation of lasting peace”
Jay opens with Queen Anne because the point is timeless: union is not only a source of strength but a way of extinguishing recurring internal jealousy.
“FORMIDABLE ONLY TO EACH OTHER”
This is Jay's brutal summary of divided confederacies. They would become dangerous to one another while becoming easier for foreign nations to influence.
“How much more easy it is to receive foreign fleets into our ports... than it is to persuade or compel them to depart”
That warning gives the essay its harder edge. Disunion does not merely weaken diplomacy; it creates openings for outside military presence and political manipulation.
How the confederacy argument works
Inequality breeds fear
Jay says separate confederacies would not remain equal in strength. As soon as one rose above the others, its neighbors would begin to look at it with envy and fear.
Distrust breeds more distrust
The Federalist editorial note highlights one of Jay's careful revisions: the printed version emphasizes that distrust naturally creates distrust. That is central to the essay's political psychology.
Different interests create different foreign ties
Once confederacies become distinct nations, they make separate treaties, pursue separate markets, and drift toward different attachments abroad. That makes sincere internal alliance less reliable.
Why Federalist 5 matters in the Publius sequence
Federalist 4 explains why foreign powers may act from jealousy and opportunity. Federalist 5 explains what happens if Americans give those powers a fractured political landscape to work with. Jay is moving from the logic of rivalry to the social psychology of disunion.
This is why the essay fits so naturally inside the larger Federalist versus Anti-Federalist debate. The Federalists feared weakness, fragmentation, and the strategic costs of disunion. Jay's version of that fear is especially concrete: he imagines separate confederacies with different foreign treaties, different interests, and growing suspicion of one another. That same diplomatic realism later runs through Federalist 64 and the story of the Jay Treaty.
It also helps explain why Jay matters so much inside Publius. Hamilton gives the opening frame, Madison later supplies the structural theory, and Jay gives the early geopolitical warning: a divided republic will not stay peacefully divided for long.
What to read next
Primary sources and further reading
- The Federalist Papers No. 5 | The Avalon Project, Yale Law School — the full text Jay uses to argue that union brings peace while divided confederacies become jealous rivals open to foreign influence.
- The Federalist — Editorial Note — useful context on Jay's revisions, including his effort to tone down stridency and sharpen the published ending.
- Draft of The Federalist 5 — Jay's draft material and evidence of the sharper language he later moderated before publication.
Use Federalist 5 to understand the jealousy argument against disunion
If you want to understand why the Federalists feared multiple confederacies so much, start here. Jay is not only warning about military weakness. He is warning about the way rival neighboring governments distort trust, politics, and foreign policy over time.