The second volume of the work "The Rise and Fall of the Labour International" refers to the Second Socialist International and overall to the period that followed the bloody suppression of the Paris Commune, and was completed with the Holocaust of the First World War.

The historical narrative focuses on the formation of mass trade unions and strong social democratic and labour parties, as organizations of the world of labor and the poor popular strata, as well as on the major transformations that marked the upward trajectory of capitalism.

The processes of formation and development of the movement are presented in detail - with the peculiarities that arise from national characteristics - not only in Europe, which was the cradle of the Second International, but also in countries of the new world, both in North, Central and Latin America, as well as in Asia, Australia and Africa.

Special mention is made of the leaders of the trade unions and socialist parties, as well as of the prominent theorists and intellectuals who dedicated their knowledge and lives to the new emerging class.