This book provides a concise and instructive review of the revolutions of the twentieth century, with separate chapters on the Russian, Chinese, Guinea-Bissau, and Vietnamese revolutions, in which the authors seek to extract the principle lessons from each of these struggles and the special course taken by each. In these and in a summary chapter on the dialectics of revolution the authors furnish a picture of the principal aspects of Marxism, Leninism, Maoism, and the other currents of Marxism active in the revolutions of our times. A second section is devoted to the United States, and begins with a survey of the class forces in American history from the settlement of the original thirteen colonies to the present, with special attention to the enslaved black population. Thereafter, the authors present their ideas on the objects and means of an American Revolution.Includes new introduction by Grace Lee Boggs.