History
The notion of closer hemispheric union in the American continent was first put forward by the Liberator Simón Bolívar who, at the 1826 Congress of Panama, proposed creating a league of Latin American republics, with a common military, a mutual defense pact, and a supranational parliamentary assembly.
This meeting was attended by representatives of Gran Colombia (comprising the modern-day nations of Colombia, Ecuador, Panama, and Venezuela), Peru, the United Provinces of Central America, and Mexico, but the grandly titled Treaty of Union, League, and Perpetual Confederation was ultimately only ratified by Gran Colombia.
Bolívar's dream soon floundered irretrievably with civil war in Gran Colombia, the disintegration of Central America, and the emergence of national rather than continental outlooks in the newly independent American republics.
The pursuit of regional solidarity and cooperation again came to the forefront in 1889-90, at the First International Conference of American States.
Gathered together in Washington, D.C., 18 nations resolved to found the International Union of American Republics, served by a permanent secretariat called the Commercial Bureau of the American Republics (renamed the "International Commercial Bureau" at the Second International Conference in 1901-02).
These two bodies, in existence as of 14 April 1890, represent the point of inception to which today's OAS and its General Secretariat trace their origins.
At the Fourth International Conference of American States (Buenos Aires, 1910), the name of the organization was changed to the "Union of American Republics" and the Bureau became the "Pan American Union".
The Ninth International Conference of American States was held in Bogotá between March and May 1948.
This was the event that saw the birth of the OAS as it stands today, with the signature by 21 American countries of the Charter of the Organization of American States on 30 April 1948 (in effect since December 1951).
The meeting also adopted the American Declaration of the Rights and Duties of Man, the world's first general human rights instrument.
The transition from the Pan American Union to OAS was smooth.
The Director General of the former, Alberto Lleras Camargo, became the Organization's first Secretary General.
Significant milestones in the history of the OAS since the signing of the Charter have included the following: