In 927 a Benedictine monk named Odo was appointed abbot of Cluny, a recently founded abbey in Burgundy, France. He refused to take the appointment. Threatened with excommunication, he accepted the role. His tenure as abbot led to some of the most significant reforms in Western monasticism.
The Cluniac movement became one of the largest religious forces in Europe, ensuring a more observant monastic life, revitalising the liturgy, and playing a significant role in the Peace and Truce of God movement, which sought to bring peace to a warring Europe. It became one of the most important peace movements in history.
