The Forge of Christendom is a landmark book written by Thomas Kagan that unfolds step by step the important historical events of medieval Europe. The author examines in detail the period from the end of the 10th century to the beginning of the Renaissance era, unfolding before the reader complex intrigues, political appeals, religious contradictions and cultural transformations of that time. The book "The Forge of Christianity" consists of neat mosaics of cultural phenomena that form a picture in which the spirit of the era and the experiences of its heroes can be felt. This work impresses with its depth of search, vivid presentation of the material and observance of historical authenticity. "The Forge of Christianity" is a fascinating historical essay that forces the reader to rethink the worldview and cultural values of the Middle Ages.