The Protestant reformation had a huge impact on European society, culture and politics. Over the course of the reformation the catholic church lost a lot of its power. The reformation also sparked the thirty years war, a conflict that would change the religion climate of Europe drastically.
These are the events that sparked the World War I: The assassination of Archduke Franz Ferdinand angered Austria. The nationalism of Serbia increased tensions in the Balkan peninsula. Alliances caused a chain of events that pulled each country into war.
