This study reveals how the social pact, formalized during the armed stage of the Mexican Revolution (1910-20) and implemented during the second stage (1920-40), was upset during the third or arrested stage (1940-70) when the bureaucrat-professionals at the helm opted for intensive economic development by taking the capitalist road. Although momentarily revived during yet a fourth stage of revolution (1970-82), this social pact was subsequently betrayed from within by the official party of the Revolution and undermined from without by the operation of economic forces behind the scenes. In this first book on the complete history of the Mexican Revolution, Hodges and Gandy reveal that, along with the end of its social pact, Mexico passed out of its former nationalist and capitalist orbit to enter the new professional societies and global order fathered by the transnationals.