For least true, I nominate South Korea. Other than comparing it to North Korea, how much do you hear libertarians claiming South Korean policies as their own? It seems the government there did a lot and mostly it paid off. The best the libertarian can manage is something like “their economy would have grown rapidly in any case,” and that may not even be true.
For “most true” you might say North Korea, but that is too easy a pick. How about India? Government there has done lots but most of it has worked out quite badly, whereas their deregulations generally have gone well (see our India unit on MRUniversity.com). Further deregulation of the economy would likely be a good idea.
Singapore can be claimed for either category.
In which country is Marxism most true (“least untrue?”)? Least true? How about other ideologies?