The book is dedicated to a unique stage in world history - the Great Migration, when, in the context of the extinction of Ancient civilization and the emergence of the civilization of the Middle Ages, the interaction between the barbarian world and the Roman Empire reached its most intense phase. The authors focus on the three leaders of the Great Migration - the Germans, the Huns and the Slavs, their role in the European civilizational processes of the 2nd-7th centuries, their transformation during migrations from tribal unions to the first state formations, the evolution of military, trade, diplomatic, cultural contacts, constituting the essence of the interaction and mutual influence of two polar worlds - Barbaricum and Empire. The book is addressed not only to historians, archaeologists, ethnologists, linguists, but also to all readers interested in the history of Europe at the turn of Antiquity and the Middle Ages.