ANOTHER DEFINITION OF AMERICAN EXCEPTIONALISM

I came across this paragraph in Forrest McDonald's Novus Ordo Seclorum on page 287:

It can be maintained that in setting aside every political writer from Plato to Montesquieu, Madison was, in these two essays,[Federalist #s 14 and 39] being more than a little presumptuous, even arrogant. But in truth, because the Framers had devised a novus ordo seclorum, they had rendered all previous political vocabulary obsolete as it pertained to the government of the United States. That government defied categorization by any existing nomenclature: it was not a monarchy, nor an aristocracy, nor a democracy, neither yet was it a mixed form of government, nor yet a confederated republic. It was what it was, and if Madison was presumptuous in appropriating the word republic to describe it, he was also a prophet, for thenceforth republic would mean precisely what Madison said it meant.