The Cusco Declaration, formally titled Preamble to the Foundation Act of the South American Union, is a two-page declaration of intent signed by 12 South American countries during the Third South American Summit on 8 December 2004 in Cusco, Peru. It announces the foundation of the Union of South American Nations. It called for a regional parliament, a common market and a common currency. See also Constitutive Treaty External links Text of the declaration (In English) Text of the declaration (In Spanish) Union of South American Nations Treaties concluded in 2004 Treaties of Argentina Treaties of Bolivia Treaties of Brazil Treaties of Colombia Treaties of Ecuador Treaties of Guyana Treaties of Chile Treaties of Paraguay Treaties of Peru Treaties of Suriname Treaties of Uruguay Treaties of Venezuela