The “American model” stems indirectly from the Aristotlean one, in which the three best governments were held to be kingship, nobility, and “politeia” (for some reason untranslated, but understood as a wise, impartial participation by citizens), in that order; the worst being democracy, oligarchy, and tyranny, in that order.
But because in his view, “politeia” always turned into democracy, nobility into oligarchy, and kingship into tyranny, the conclusion was that the state should strive to democracy as the best form that could be achieved.
In the 1700s, a historically unique situation occurred for the first time in which a new form of governance could be attempted via physical separation from the old. Because direct democracy was undoable, a representational form of it was tried. But like all others, it was unstable over great lengths of time.
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