The Turning Point of Modern History

Why the Reformation? Church historian Phillip Schaff writes about that as the introduction to his Volume 7 discussing the German Reformation:

§ 1. The Turning Point of Modern History.
The Reformation of the sixteenth century is, next to the introduction of Christianity, the greatest event in history. It marks the end of the Middle Ages and the beginning of modern times. Starting from religion, it gave, directly or indirectly, a mighty impulse to every forward movement, and made Protestantism the chief propelling force in the history of modern civilization.

The age of the Reformation bears a strong resemblance to the first century. Both are rich beyond any other period in great and good men, important facts, and permanent results. Both contain the ripe fruits of preceding, and the fruitful germs of succeeding ages. They are turning points in the history of mankind. They are felt in their effects to this day, and will be felt to the end of time. They refashioned the world from the innermost depths of the human soul in its contact, with the infinite Being. They were ushered in by a providential concurrence of events and tendencies of thought. The way for Christianity was prepared by Moses and the Prophets, the dispersion of the Jews, the conquests of Alexander the Great, the language and literature of Greece, the arms and laws of Rome, the decay of idolatry, the spread of skepticism, the aspirations after a new revelation, the hopes of a coming Messiah. The Reformation was preceded and necessitated by the corruptions of the papacy, the decline of monasticism and scholastic theology, the growth of mysticism, the revival of letters, the resurrection of the Greek and Roman classics, the invention of the printing press, the discovery of a new world, the publication of the Greek Testament, the general spirit of enquiry, the striving after national independence and personal freedom. In both centuries we hear the creative voice of the Almighty calling light out of darkness.