The document summarizes major events in Europe from the 14th-15th centuries, including the Great Western Schism which divided the Catholic Church, the Black Death plague pandemic that killed 30-60% of Europe's population, the Hundred Years' War between England and France, and the role of Joan of Arc in helping France defeat the English. Key reformers like John Wycliff and Jan Huss challenged the authority of the Catholic Church. The pandemic and war weakened the Church and feudal systems, while increasing nationalism and paving the way for the Renaissance and Reformation.