Thirty Years War

The Thirty Yeaars War was a religious war, fought mainly in the Holy Roman Empire, lasting from 1618 to 1648. It began as a war between Catholics and Protestants, but the grew to be a political war involving most of Europe. The Peace of Augsburg was a major cause because, although it briefly ended religious battles, it only recognized Catholicism and Lutheranism; as Calvinism bgan to spread, more religious conflict resulted because it was not recognized by the Peace of Augsburg. The war continued the Bourbon-Habsburg rivalry. It resulted in a large number of casualties and, eventually, the Peace of Westphelia.