Summarize: Scholars are increasingly viewing the Constantinian era as a period that introduced significant changes to Christian worship, which represented not the maturation of an earlier apostolic tradition but rather the breakdown of earlier, simpler traditions that varied across different churches and regions. These fourth-century developments are seen as setting the stage for the later medieval liturgical practices. However, there is little evidence for the pre-fourth-century practice of these traditions as described in the Apostolic Tradition. The evolution of liturgical practices in the medieval church, which were based on the liturgical patterns established in fourth-century Christianity. It mentions the increasing complexity of written liturgies and the use of rites in both the Eastern and Western branches of the church. The Eastern Orthodox Church used the Byzantine Rite, including the liturgies of St. Basil and St. Chrysostom, while in the West, various local rites such as the Gallican, Ambrosian, and Mozarabic were practiced. However, these Western rites eventually gave way to the Roman Rite, which became the dominant form of worship by AD 1000 and remained largely unchanged until the Reformation in the sixteenth century. Additionally, the text notes that monasticism had a significant impact on the development of liturgy, particularly in the area of daily public prayer.
