A lot of upperwardly mobile, ambitious people don't realize this, or they generally understand it only in terms of chastising their high school peers who stayed home. If you build a society based on the assumption everyone will simply move and re-skill to the regions with economic opportunity, you get a lot of regions of bitter people who stayed behind somewhere and watched their local economy get destroyed by trade…
It's funny how globalised the anti-globalisation populist political movements may be. Yesterday's news included "Reichsbürger" getting busted in Deutschland for conspiring to coup, and it was mentioned the suspects were also pretty QAnon-aligned. However, Reichsbürger are not indigenous, but are derived from US "Sovereign Citizens", who result from an amalgam of nuttery derived from XIX and XX conspiracies wishing to…
If the US government hadn't just completed a program of left-wing eradication in the early part of the 20c, the pressure probably would have turned rural people towards the populism that they had turned to throughout the 19c and very early 20c; the kind of populism that culminated in the 4-term FDR presidency and the New Deal.
"Populism" as you use it here (to refer to right-wing antisemitic groups), was intentionally turned into a slur that was used to attack the working-class left-wing:
> Most of the Progressives, such as Theodore Roosevelt, Robert La Follette, and Woodrow Wilson, were bitter enemies of the Populists. In American political rhetoric, "populist" was originally associated with the Populist Party and related left-wing movements, but beginning in the 1950s it began to take on a more generic meaning, describing any anti-establishment movement regardless of its position on the left–right political spectrum.
https://en.wikipedia.org/wiki/People's_Party_(United_States)
https://en.wikipedia.org/wiki/Eustace_Mullins
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edit: as far as I can tell, the only two things that are characteristic across all European cultures are drinking cow's milk and conspiracist antisemitism. Although America further developed it and fed it back to Europe (note Ford's influence on Hitler), the framework is definitely European. And of course, a lot of fascism in Europe was financed by the US post-WWII.