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Libertador General San Martín is a town in Jujuy Province, Argentina, and capital of the Ledesma Department, located on the National Route Nº34. The town was founded under the name of Pueblo Nuevo Ledesma in 1899, on an area donated by the owners of the Ledesma sugar refinery. Two years later, the outline and later subdivision of the eight blocks surrounding the main square was made.