I haven't studied history or political science, but I suspect that a bunch of cooperating individual local municipalities can as easily lead to war as to federa

I haven't studied history or political science, but I suspect that a bunch of cooperating individual local municipalities can as easily lead to war as to federalism. The Federalist Papers talk a lot about factionalism versus tyranny. On a larger scale, look at how long it took what are now European Union members to stop warring with each other.