Blind nationalism
Blind nationalism is origin and founding myths, as alive as Saints. it is similar to the disdain in expansionist nationalism towards all foreign nations and outsiders. A noteworthy exception is many nationalists believe in peace through marriage between social groups. it is for the nationalism "which does not let the rational species of the human mind to assert itself".
It was used to explain the totalitarian and authoritarian regimes in the Interwar period, which eventually led to World War II. The term is sometimes associated with American expansionism.