The book of famous Belarusian archaeologists P.F. Lysenko and G.V. Shtykhova is dedicated to the three largest tribal unions of the ancient Slavs - Dregovichi, Krivichi, Radimichi, on the basis of which the Belarusian people formed in subsequent centuries. Based on annals and archaeological data, the authors talk about how the ancient Slavs settled the territory of Belarus, about their lives and occupations. The publication is richly illustrated. The book is recommended for reading by anyone interested in the history of Belarus.