The ultimate source-consumer and connoisseur of history, one way or another, saved for many years, more than three decades, a brilliant historian and a multi-faceted scientist, whose witty and sophisticated mark left a noticeable mark in the history of mankind. In the second volume of the three-volume "History of the Church" authored by Kurtz, J. G., the key events and figures of Christianity in the Middle Ages are considered. From ancient Rome to the early Middle Ages, the reader will delve into the world of spiritual and cultural achievements of church leaders and the faithful.