In the XX century, the greatest events in history took place on the territory of the Russian Empire: the birth and death of an unknown civilization called the Union of Soviet Socialist Republics (USSR). The author - a contemporary of this era - on the basis of his views and by analyzing literary sources tried to concisely assess what had happened. This book is addressed to those who are ready to really look at the USSR - the Great Power, which, although it needed improvement, but for the first time in the history of mankind in fact provided its citizens with the most important rights and opportunities - to work, to rest, health protection, comprehensive cultural development, and, finally, contributed to the cessation of the colonization of peoples, the formation of peace and friendship on the planet.