How did Christianity impact Europe in the Middle Ages

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The history of Christianity during the Middle Ages is the history of Christianity between the Fall of Rome (c. 476) and the onset of the Protestant Reformation during the early 16th century, the development usually taken to mark the beginning of modern Christianity. This is the period in European history known as the Middle Ages or Medieval era.

Among the dioceses, five held special eminence: Rome, Constantinople, Jerusalem, Antioch, and Alexandria, generally referred to as the Pentarchy. The prestige of most of these sees depended in part on their apostolic founders, or in the case of Byzantium/Constantinople, that it was the new seat (New Rome) of the continuing Roman or Byzantine Empire. These bishops considered themselves the spiritual successors of those apostles.[1] In addition, all five cities were Early centers of Christianity.