Original: The reform was largely carried out by Saint Odo (c. 878 – 942) and spread through France (Burgundy, Provence, Auvergne, Poitou), England, and much of Italy and Spain.Justus.Anglican.org Corruption The impetus for the reform was corruption within the church, particularly simony and concubinage.
Simplified: The reform was largely carried out by Saint Odo. It spread through France (Burgundy, Provence, Auvergne, Poitou), England and much of Italy and Spain.