Something I noticed in a cemetery in Boston a few years ago.
In 1776, Boston was already a fairly old town. Around 200 years old. About as long as what we think of as American History. Boston has only been part of a Federated Republic for half its history (and that's only counting the Europeans).
The idea that The Founders came to a new land to create a new nation... it doesn't fit the timeline. They were already here. And had been for a pretty long time.