Consequences of the 30 Years War From the change of warfare, to the vast changes in government and dominance, the Thirty Years War had clearly resulted in many changes and effected many areas of life. These changes occur politically, religiously, socially and economically. As the most destructive event in German history, the Thirty Years War started as a conflict between the Protestants and Roman Catholics, yet ended up as a fight for political power. The war was divided up into 4 phases, the Palatine-Bohemian, Danish, Swedish, and French phases. Though all the effects of the