Psychohistory

I believe childrearing is the birth of society.
 
According to the data, countries who use less phsical punishment have less violent crimes, democracy emerged first in countries where parenting styles moved over to less authoritarian and more democratic, countries with dictatorial parenting styles tend to be dictatorships. The shaping of childrearing is the shaping of the whole society. For more data, The Origins of War in Child Abuse by Lloyd deMause, and anything by psychoanalyst Alice Miller are excellent authoritative works in the field.