The second part of the author's trilogy about the Mexican Revolution covers the period of 1917–1928, relatively unknown to the Russian reader, when the attention of the whole world was riveted to Mexico and Russia. In both countries, large-scale popular revolutions won, and the 1920s were the time for the implementation of revolutionary programs in practice. In the face of fierce opposition from the West (and in the case of Mexico, above all, the United States), Russia and Mexico carried out grandiose social experiments, carefully studying each other's experience. In both countries, fierce internal struggles took place in the camp of the victorious revolutionaries - and all this against the backdrop of a struggle with the reaction that was raising its head. The USSR paid great attention to Mexico as a country with a revolutionary, people's regime. It is no coincidence that Alexandra Kollontai, known all over the world at that time, was appointed Soviet plenipotentiary in Mexico City.1928 is the year of a radical turning point in the development of the revolutionary process both in the Soviet Union and in Mexico. There was a change of models - towards the radicalization of the revolution in the interests of accelerating industrial development and overcoming centuries of backwardness.