Yeah.. I would put the Islamic fundamentalists under social conservative they want to resume a system from ~820 AD. AFAIK these kinds of uses of radical are poor metaphors and certainly weren't relevant in the 18th or 19th century.
I generally view most of that explanation of the US as propaganda. The founders of the republic were 2nd generation+ congregationalists who were more going through the motions than puritans like their socially conservative forefathers. Shay's rebellion really highlights more about the nature of the actual inhabitants of the young nation, the way they influenced the republic and the fact that they were entirely foreign to Washington. I also don't think many of them could vote until Jackson.
https://en.wikipedia.org/wiki/Classical_radicalism
I generally view most of that explanation of the US as propaganda. The founders of the republic were 2nd generation+ congregationalists who were more going through the motions than puritans like their socially conservative forefathers. Shay's rebellion really highlights more about the nature of the actual inhabitants of the young nation, the way they influenced the republic and the fact that they were entirely foreign to Washington. I also don't think many of them could vote until Jackson.