sentences:  Medellín as the birthplace of several writers has been the space for many other literary and documentary works of authors like Tomás Carrasquilla, Fernando González, Porfirio Barba Jacob, Manuel Mejía Vallejo, Gonzalo Arango, León de Greiff and many others.It is a city of a rigid and conservative Catholic tradition and one of the most important industrial and business centers of Colombia.It came into a social crisis at the end of the 20th century due to the emergence of the mafias.