in thread "Mapping the critical cohorts of the US": That is not unique to America. Most of the new world operated on that principle, and much of the old world too. The USA was one of the least multicultural/mixing-pot countries of the Americas.... 1y ago (collapse hidden) log in to judge received 2.9 2.9 That is not unique t (view hidden) log in to judge received 2.9 2.9