This is a mistake. The evolution of proto european, to early european to greek t

This is a mistake.
The evolution of proto european, to early european to greek to roman to germanic to english law maintains a consistent chain of first principles throughout, with the holy roman empire and the Hansa resulting in the english invention of the modern state, and the subsequent use by the founders of that invention, the napoleonic french appeal to roman history, and the vision of a united north american continent seeking legitimacy via all three as the model for the american government.
As for federalism, the roman empire maintained local law custom and religion and the invention of the ‘common law’ was as an empirical test of the universality of law that the empire could enforce given its common application in different cities and cultures and states.

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