What three major catastrophes struck europe prior to the protestant reformation

The Great Famine: The Great Famine of 1315-1317 affected most of Europe, from the east of Russia to the south of Italy. It was caused by particularly bad weather due to the end of the Medieval Warm Period.The Hundred Year's War: The Hundred Year's War was a series of conflicts from 1337 to 1453, between the House of Plantagenet from England and the House of Valois from France. It was one of the most important conflicts of the Middle Ages.The Black Plague: The Black Death, or Black Plague, was a devastating pandemic that killed between 30%-60% of the population of Europe. The bacteria originated in the plains of Central Asia, and carried to Europe through the Silk Road and merchant ships.