The book offered to the reader is one of the most significant works in Russian historical science on the history of the Baltic Slavs: Wends and Lutichs who inhabited the territory of modern Poland, Germany and Denmark. The author talks in detail about their beliefs, life, about their selfless resistance to Western expansion. Chronologically, this work covers the period from the resettlement of the Slavs along the shores of the Baltic Sea to the 10th century. The book will be of interest to teachers, students and everyone interested in history.