The earliest beginnings of the Slavs are lost in the darkness of prehistory. We can only guess when they separated from the common trunk of the Indo-European peoples, and when, maybe thousands of years later, they formed a separate large group, one of three - and together with the Romance and Germanic peoples they created the civilizational and geopolitical Europe in which we live today. Like others, they did not have their own name for a long time; as others were later named by their closest neighbors, and only after a few centuries by themselves. The book covers the period from the second century to the sixth century of the new era. At that time, Slavs appear on the pages of history as already formed, active and separate European people. This requires presentation and analysis of processes and events that take place at that time. It is a period that is still poorly known, but very controversial.