This book describes the development of several major revolutions in an effort to discover their essential features, their individual contributions to revolutionary strategies and practice, and their interactions with and reciprocal effects on the larger world environment. The twentieth century was one of world revolution, characterized by the Marxist-inspired revolution in czarist Russia, then fascist revolutions in Italy and Germany between the world wars, and later anti-imperialist nationalist revolutions in countries such as China, Vietnam, and Cuba. The revolutions in Russia and China, two of the world's largest and most populous countries, not only had tremendous impacts on their own populations but also affected how other nations and peoples would react to future revolutionary movements. The Vietnamese revolution, apart from being a major movement in Asia for political and economic transformation, became a central cold war test case for United States opposition to communist-led revolutions. The Cuban, Nicaraguan, and Iranian revolutions were also, in part, reactions to foreign intervention.