For Bolivia, the contract of 1873 between the government and "Compañía de Salitres y Ferrocarriles de Antofagasta" was not yet in force, because, according to the Bolivian constitution, all contracts with the Bolivian government had to be approved by Congress.
Para Bolivia o contrato de 1873 coa "Compañía de Salitres y Ferrocarril de Antofagasta" aínda non se atopaba vixente, porque de acordo á constitución boliviana, os contratos sobre recursos naturais debían ser aprobados polo congreso.