Miguel de Zañartu in the context of Patria Vieja

The Chilean Declaration of Independence is a document declaring the independence of Chile from the Spanish Empire. It was drafted in January 1818 and approved by Supreme Director Bernardo O'Higgins on 12 February 1818 at Talca, despite being dated in Concepción on 1 January 1818. The ceremony of independence was performed on 12 February 1818, the first anniversary of the Battle of Chacabuco.

The original document, displaying manuscript comments by O'Higgins, was damaged at the Palace of the Real Audiencia of Santiago. In 1832, under President José Joaquín Prieto, a new copy was sent to Peru to be signed by O'Higgins, and later by his former ministers, Miguel Zañartu, Hipólito Villegas and José Ignacio Zenteno, who were still living in Chile. This copy was kept at the Palacio de La Moneda until the 1973 Chilean coup d'état, when it was destroyed during the fighting.