Who standardized the Catholic Church service?

The standardization of the Catholic Church service, particularly the Mass, was significantly influenced by Pope Pius V in the 16th century following the Council of Trent (1545-1563). He issued the Roman Missal in 1570, which established the structure and content of the Mass for the Latin Church. This standardization aimed to unify the diverse practices within the Church and ensure consistency in worship. Over time, this Missal was further revised, but Pius V's version laid the foundation for the liturgical practices that followed.