Bibliography (7):

  1. Individualistic CEO and Corporate Innovation: Evidence from US Frontier Culture

  2. Those Who Stayed: Individualism, Self-Selection and Cultural Change during the Age of Mass Migration

  3. Cultural entrepreneurship: stories, legitimacy, and the acquisition of resources

  4. Intergenerational Mobility of Immigrants in the United States over Two Centuries

  5. Wikipedia Bibliography:

    1. Natural experiment

    2. https://en.wikipedia.org/wiki/California_gold_rush  :

      https://en.wikipedia.org/wiki/California_gold_rush

    3. Founder effect