Feel free to name the country with more than 100 million people, a continent-sized geography, and a multitude of ethnicities that works "better" than the US. He

Feel free to name the country with more than 100 million people, a continent-sized geography, and a multitude of ethnicities that works "better" than the US. Heck, raise the minimum population to 130 million and use that as the sole criterion. To put another way, every one of the countries with a GDP per capita (PPP-adjusted) (<https://en.wikipedia.org/wiki/List_of_countries_by_GDP_(PPP)_per_capita https://en.wikipedia.org/wiki/List_of_countries_by_GDP_(PPP)...>) higher than the US has a population smaller than that of Los Angeles County.