This dataset, Catálogo Documentación Legaciones españolas Chile-Perú-Ecuador (1833-1866) AGA- Asuntos Exteriores. Embajadas_Legaciones_Consulados, compiles and systematizes archival sources from the Spanish diplomatic legations in Chile, Peru, and Ecuador held at the Archivo General de la Administración (AGA, Alcalá de Henares). It was generated through a critical historiographical method, involving documentary reading, transcription, and recording, and is provided in open-access format (CC-BY). The catalogue is the result of collaborative work by Rodrigo Escribano Roca, Felipe Sobrinos Bueno, Carmen Castaño Martín, and Juan Sampedro Martínez, and was funded by the EU Horizon Europe programme under the Marie Skłodowska-Curie grant POST-EMPIRE (101148590). It offers a structured dataset that facilitates the study of Spain’s foreign policy and consular networks in the South American Pacific during the mid-nineteenth century, and has already been cited and used in several peer-reviewed publications and forthcoming monographs.

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