He made a mark in Argentine politics with his strong opposition to Laïcité, which characterized the Generation of '80 that governed the country in the second half of the 19th century and the beginnings of the 20th.
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Shortly before his death, and carried by his opposition to secular liberalism, he joined the heterogeneous opposition represented by the Unión Cívica.
San Pedro Sula | San Pedro | Pedro Almodóvar | San Pedro de Macorís | Pedro Infante | Pedro II of Brazil | Pedro Martínez | Pedro Vargas | San Pedro, Los Angeles | Pedro Rosselló | San Pedro Town | Colégio Pedro II | Pedro Rodríguez | Pedro Fernández de Castro | Pedro Damián | Pedro Álvares Cabral | San Pedro de Atacama | Point Pedro | Pedro Juan Caballero, Paraguay | Pedro Juan Caballero | Pedro Cieza de León | Pedro Bell | Dom Pedro | Colégio Pedro II (Rio de Janeiro) | São Pedro | Pedro Torres | Pedro Rodríguez (racing driver) | Pedro Rizzo | Pedro Pierluisi | Pedro Paterno |
José Manuel Estrada, with other thinkers and political defenders of Catholic thought such as Pedro Goyena and Emilio Lamarca, stood out in Argentinean history for their firm opposition to the Secularism that characterized the government of the country between the second half of the 19th century and the first decades of the 20th century.