Through these pages we delve in a simple and didactic way into the times of the old railroads, the international opening, the adjustments and imbalances of the fragile Mexican economy, the culture, daily life and the social arrangements of the time... but also in the struggles, the workers' and peasants' demands, the strikes and the mistreatment of a part of the population and everything that for more than thirty years of history happened in Mexico under the presidency of Porfirio Díaz.