“Russia in the Middle Ages” is the fourth book of G. V. Vernadsky’s “History of Russia,” devoted to the period of the 15th to the early 16th centuries, when the formation of a centralized Russian state takes place. Drawing on a broad range of sources, the author presents a panorama of the economic, social-political, and cultural history of the Moscow kingdom in the era when it gained independence from the Mongol-Tatars and saw the gradual growth of its power.