While not a direct answer to your question, I understand that many historians consider the American Revolution a relatively "conservative" revolution in that America dispensed with English authority and the monarchy, but retained fundamental principles of governance such as the rule of law, jurisprudence, etc.

Sorry, but your submission has been removed because we don't allow hypothetical questions. If possible, please feel free to rephrase the question so that it does not call for such speculation, and resubmit Otherwise, this sort of thing is better suited for /r/HistoryWhatIf.