Although basic freedoms (such as freedom of thought) in Nicaragua were decreed in 1869, their implementation did not have major repercussions until 1893 with the approval of La Liberrima – an important transformation in the country. Its introduction reflected a great change in the relationship of religion and the Constitutions of 1838 and 1858. An analysis of La Liberrima is necessary to study the original development of Protestantism as a social phenomenon within modern Nicaragua. Following the irruption of radical liberalism at the end of the nineteenth century, Protestantism expanded and developed new forms of association. In this context, the emergence and meaning of the phenomenon can be linked to modernizing forms of civil participation that created local bases and fomented its expansion including churches, schools, health-related projects, and publications. The chapter also includes an examination of a Protestant publication, principally the magazine Antorcha, to highlight the evolution of Protestantism as a historical process. Based on these documents, this work aims to broadly assess the emergence of local Protestant actions that developed in a less than welcoming environment.