so, to sum up — INSIDE (or to the west of) the hajnal line we find:
– late marriage and 10-20% of adults never marrying
– small families, either nuclear or stem
– higher average iqs than outside the line
– the highest concentrations of human accomplishment in europe
– more democracy
– greater civic-mindedness or orientation towards the commonweal
– generally low perceived corruption
– high individualism
– and low homicide rates in the 19th century
why?
https://hbdchick.wordpress.com/2014/03/10/big-summary-post-on-the-hajnal-line/