Cultural differences between countries are quite large, and likely affect differences in economic development. But how did these differences arise in the first place? Consider recent history: it’s not a stretch to believe that Europeans who immigrated to the US were generally individualistic, adventurous, entrepreneurial people who potentially did not fit in well with their existing society; they were possibly non-conformist, less obedient that those who stayed.
Values such as individualism, innovativeness and entrepreneurialism gave these immigrants an edge in the longer term, and this made the US very successful, even relative to Europe. Can such a story apply over the much longer term? Can it explain how cultures diverged thousands of years ago?