Thirty Years' War

The Thirty Years' War was a religious war between the Protestants and Catholics of the Holy Roman Empire. It eventually spread to become a major war that covered most of Europe. The Bourbons and the Habsburgs are the one that initially began the feuding but it later become a war of France verses the Habsburgs. Disease and famine played big roles in the war because each contributed to the weakening of both sides. Germany took a big loss during the war losing about 30% of its population.