At the end of the 10th - in the middle of the 11th century, tribes of nomads - Pechenegs, Torks and Polovtsians - invaded the borders of Ancient Rus'. They changed the course of the historical life of Rus' and the entire Eastern Slavs and had a significant influence on their future destinies. For several centuries, Rus' not only fought with the steppe inhabitants, but also founded military-political alliances with them. In his book (original title 1884 “Pechenegs, Torci and Cumans before the invasion of the Tatars. History of the southern Russian steppes of the 9th–13th centuries”), the famous Russian historian Pyotr Vasilyevich Golubovsky tells how much and how the neighborhood of nomads influenced the political life of Ancient Rus', what were the relations between the Turks and Slavs. Based on important Russian, Byzantine and Arabic sources, the scientist also talks about the mutual tribal kinship and tribal origin of the Pechenegs, Torks and Cumans. The book is published with slight abbreviations, preserving the peculiarities of spelling and punctuation of the late 19th century.