On the 16th of August 1976 the "Declaration of Bogota, calling for the economic integration of South America, and for non-intervention in the internal affairs of the South American states, was signed.
     The design on the stamp is a political map of South America. Venezuela, Colombia, Ecuador, Peru and Chile are colored, and their capitols are indicated by a small circle. The outlines of Peru and Ecuador are based on Peru's claims, although the border was not settled until 1998. The boundaries of Bolivia and Paraquay reflect the borders agreed to in the "Treaty of Buenas Aires."