1790 the Americans who wrote the Constitution considered Europe to be the pinnacle of civilization.
Wasn't the Constitution written to abolish the monarchies that ruled Europe?
No.
The Constitution was written to clearly establish that America was not going to have a monarchy like Europe.
But virtually everything of 'civilization' came from Europe- the laws America developed were largely taken from British law, and virtually every important scientific book in that era was written in Europe. Franklin, Jefferson, and others built their libraries from books published by those European savages.
Yes, most of the colonists escaped from Europe and hadn't had time to write their own books. Isn't it interesting that the French took their cues from the Americans and not vice versa? One could say that the American revolution was the most important event for Europe since Roman times.