"The Horde Yoke and the Formation of Russia" is a historical book that reveals the period of medieval history of Ukraine and Russia associated with the Mongol Horde. The author investigates the events and consequences of the Mongol-Tatar rule, describing people's lives, political and social changes that took place during this difficult period of history. The book reveals the influence of the order system on the formation of culture, economy and society of those times. This is a valuable source for anyone who is interested in the history of Ukraine and Russia and wants to better understand the events that influenced their future fate.