The book "Mongols in Russia" by the author Curtin Jeremy is a study of an important era in the history of Russia, when the mighty empire of the Mongol Genghis Khan covered and conquered part of the European territory. The author examines in detail the causes, chronology and consequences of the Mongol invasion, as well as the impact of these events on the development of the Russian state and culture. This book is an important source for understanding an important period in the history not only of Russia, but also of Europe as a whole.