1517, the fragile religious unity of Western Europe is shattered. Martin Luther would permanently alter the political, social, and religious lines of Europe with his nailing of 95 Theses to the church door. What motivated him and what were the lasting effects he had upon modern European development. https://app.fiveable.me/learn/ap-european-history/martin-luther-reformation/RcIEeZ1oRTbZojy2RlbQ