The document summarizes religious reforms that took place from the 900s to 1300s in Europe. It discusses issues facing the Catholic Church like the selling of church positions and marriage of priests. Monks at Cluny began strictly following Benedictine rules, influencing other monasteries. Pope Leo IX and Gregory VII enacted reforms, ending simony and priest marriage. The Church structure was reorganized like a kingdom, with the Pope at the head. New orders of friars like the Dominicans and Franciscans spread the faith, while grand Gothic cathedrals were built across Europe.