1130-1150

Updated: May 3, 2025

Already in the years 1130-1150 powerful leagues came into existence; and a few years later, when Frederick Barbarossa invaded Italy and, supported by the nobles and some retardatory cities, marched against Milan, popular enthusiasm was roused in many towns by popular preachers.

kniaz Petr Alekseevich Kropotkin - Mutual Aid; a factor of evolution