This book is an abridgement and translation of Guillermo Lora's five-volume history. It deals with the strengthening and radicalisation of Bolivia's organised labour movement, which culminated in the drastic revolutionary changes of the 1950s. The first half offers a reinterpretation of Bolivian history in the century preceding the revolution, viewed from the perspective of the working class. The second half discusses in more detail the major political events and doctrinal issues of a period in which the author, as secretary of the Trotskyist Partido Obrero Revolucionario, himself frequently...