What does it mean if it includes heterogenous populations from linguistic, historic, religious and even cultural backgrounds?
Switzerland speaks languages from the Italic and Germanic clades of PIE [1]. That makes them about as dissimilar as Indo-Iranian and Slavic languages are from each of them.
Helvetia is a confederacy specifically because Switzerland has never been particularly homogenous. Homogeneity explains, in part, Nordic and Japanese success, though less and less the former in the modern era. It does not explain Switzerland’s.
[1] https://en.wikipedia.org/wiki/Proto-Indo-European_language
Swiss territory has been part of, variously, the Roman Empire, various Germanic kingdoms, the Carolingian Empire, the HRE and Napoleonic France. Swiss independence was really only enshrined at the Congress of Vienna, I believe at the courtesy of Metternich. Of Austria-Hungary.
> Swiss militia that defended this was the basis for the American 2nd ammendment
Source?
> the Swiss greater class homogeneity
Yes, Switzerland was universally poor and started becoming wealthy with less inequality than other nations in the 1920s. (Note that in the 1910s like 15% of Switzerland was foreign born.)
The homogeneity pitch just doesn’t work for Switzerland.
Arguably common knowledge but if you must. https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=...
As for a source on the history of the confederation: https://youtu.be/OpA_ET9bYGY
"In early modern Switzerland, the Swiss Confederacy was a pact between independent states within the Holy Roman Empire. The populations of the states of Central Switzerland considered themselves ethnically or even racially separate: Martin Zeiller in Topographia Germaniae (1642) reports a racial division even within the canton of Unterwalden, the population of Obwalden being identified as 'Romans', and that of Nidwalden as 'Cimbri' (viz. Germanic), while the people of Schwyz were identified as of Swedish ancestry, and the people of Uri were identified as 'Huns or Goths.'
Modern Switzerland is atypical in its successful political integration of a multiethnic and multilingual populace" [1].
I know plenty of Swiss-for-generations Swiss whose complexions would not have passed as white a hundred years ago.
[1] https://en.wikipedia.org/wiki/Swiss_people#Cultural_history_...