UNASURUnion of South American NationsSouth American integrationcontinental unionSouth American Parliament

Union of South American Nations (UNASUR): History, Structure, and Regional Impact

Union of South American Nations (UNASUR) The Union of South American Nations, commonly known as UNASUR, is a continental union established to foster integration and cooperation among the ...

Union of South American Nations (UNASUR)

The Union of South American Nations, commonly known as UNASUR, is a continental union established to foster integration and cooperation among the sovereign states of South America. With the motto "Soy del Sur" (I am from the South), the organization was designed to create a unified regional voice, enhancing political, social, and economic ties across the continent.

From its inception, UNASUR aimed to coordinate regional policies on everything from infrastructure and health to defense and citizen security, operating as a platform for dialogue and collective action independent of external influence.

South American presidents gathered during an extraordinary meeting for the signing of the UNASUR Constitutive Treaty in May 2008 in Brasília
South American presidents gathered during an extraordinary meeting for the signing of the UNASUR Constitutive Treaty in May 2008 in Brasília

Key Facts

Heads of State at the 5th UNASUR Meeting in Lima, in Peru.
Heads of State at the 5th UNASUR Meeting in Lima, in Peru.
  • Established: Formed via the Cusco Declaration (2004) and the Constitutive Treaty (2008).
  • Member States: Includes Argentina, Bolivia, Brazil, Colombia, Guyana, Peru (suspended), Suriname, and Venezuela.
  • Official Languages: Spanish, Portuguese, English, and Dutch.
  • Key Institutions: The South American Parliament (Cochabamba, Bolivia) and the Bank of the South.
  • Scope: Covers a vast maritime area, with Exclusive Economic Zones totaling approximately 29,884,548 km².

History and Formation

Selection of GDP PPP data (top 10 countries and blocks) in no particular order
Selection of GDP PPP data (top 10 countries and blocks) in no particular order

The foundations of UNASUR were laid on December 8, 2004, with the Cusco Declaration. This initial agreement set the stage for a more formal structure, which culminated in the signing of the Constitutive Treaty on May 23, 2008, in Brasília. The treaty officially entered into force on March 11, 2011.

Soldier of the Brazilian Army patrols the surroundings of the Summit of Heads of State of Unasur in 2008, held in Brasília.
Soldier of the Brazilian Army patrols the surroundings of the Summit of Heads of State of Unasur in 2008, held in Brasília.

The organization's early years were marked by high-level diplomatic activity, including several summits hosted by member nations to align regional goals. These meetings focused on creating a cohesive bloc capable of managing internal crises and promoting sustainable development.

South American leaders during the Unasur 4th Summit, in Georgetown, Guyana.
South American leaders during the Unasur 4th Summit, in Georgetown, Guyana.

Leadership and Governance

UNASUR is governed by a rotating Presidency pro tempore and a Secretary General. The first Secretary General was Néstor Kirchner of Argentina, followed by leaders from Colombia and Venezuela. The presidency has rotated through various heads of state, including Michelle Bachelet of Chile and Evo Morales of Bolivia.

Néstor Kirchner, first Secretary General of UNASUR
Néstor Kirchner, first Secretary General of UNASUR
Ernesto Samper, the most recent Secretary General.
Ernesto Samper, the most recent Secretary General.
Evo Morales was the most recent President of UNASUR.
Evo Morales was the most recent President of UNASUR.

Organizational Structure

South American presidents in front of the Casa Rosada, Buenos Aires, during the bicentenary of the May Revolution.
South American presidents in front of the Casa Rosada, Buenos Aires, during the bicentenary of the May Revolution.

The union operates through a complex system of councils and specialized bodies designed to address specific regional challenges. The primary governing body is the Council of Heads of State and Government.

Ministerial Councils

To ensure technical and political coordination, UNASUR established several specialized councils, including:

  • South American Defense Council: Focused on regional security and defense cooperation.
  • South American Energy Council: Coordinating energy policies and resources.
  • South American Council of Health: Managing public health initiatives through the South American Institute of Government in Health (ISAGS).
  • Other Councils: Dedicated to education, culture, science, technology, infrastructure, and the fight against drug trafficking.
Meeting of Ministers of Foreign Affairs of the members of Unasur.
Meeting of Ministers of Foreign Affairs of the members of Unasur.

Key Institutions

Beyond the councils, UNASUR created permanent institutions to provide legislative and financial autonomy. The South American Parliament is headquartered in Cochabamba, Bolivia, while the Bank of the South was established to provide an alternative source of financing for regional development projects.

Rafael Correa, Evo Morales, Néstor Kirchner, Cristina Fernández, Luiz Inácio Lula da Silva, Nicanor Duarte, and Hugo Chávez at the signing of the founding charter of the Bank of the South
Rafael Correa, Evo Morales, Néstor Kirchner, Cristina Fernández, Luiz Inácio Lula da Silva, Nicanor Duarte, and Hugo Chávez at the signing of the founding charter of the Bank of the South

Regional Demographics and Economy

The member states of UNASUR represent some of the world's largest urban centers and economic assets. Major metropolitan areas such as São Paulo and Buenos Aires serve as primary hubs for the region's commerce and culture.

Members of UNASUR and main regional highways.
Members of UNASUR and main regional highways.

Economically, the region is characterized by diverse currencies and significant industrial capacity, exemplified by the Paraguaná Refinery Complex, one of the largest refinery capacities globally.

Paraguaná Refinery Complex, considered the second largest and largest capacity in the world.
Paraguaná Refinery Complex, considered the second largest and largest capacity in the world.

The region's demographic profile is predominantly Christian, with Roman Catholicism being the most prevalent faith in countries like Bolivia and Venezuela, while Guyana and Suriname show a more diverse religious landscape.

UNASUR member states. (Territories in white not part of UNASUR.)
UNASUR member states. (Territories in white not part of UNASUR.)

Summary of UNASUR Member State Data

Overview of UNASUR Member State Characteristics
Member State Official Language(s) Currency Major City
Argentina Spanish Peso Buenos Aires
Bolivia Spanish Boliviano La Paz/Sucre
Brazil Portuguese Real São Paulo
Colombia Spanish Peso Bogotá
Guyana English Dollar Georgetown
Peru Spanish Sol Lima
Suriname Dutch Dollar Paramaribo
Venezuela Spanish Bolívar Caracas

Challenges and Leadership Crisis

In recent years, UNASUR has faced significant instability. Political divergences led to a leadership crisis, resulting in several countries renouncing the treaty or suspending their membership. Nations including Colombia, Brazil, Argentina, and Ecuador have experienced periods of withdrawal or suspension due to disagreements over the organization's direction and its handling of regional political crises.

Former headquarters of UNASUR
Former headquarters of UNASUR
Exclusive Economic Zones of the member states of the USAN. Considering them, the total area reaches the 29,884,548 km2 (11,538,488 sq mi)
Exclusive Economic Zones of the member states of the USAN. Considering them, the total area reaches the 29,884,548 km2 (11,538,488 sq mi)
A clickable Euler diagram showing the relationships between various multinational organizations in the Americas vte
A clickable Euler diagram showing the relationships between various multinational organizations in the Americas vte

Frequently Asked Questions

What is the primary purpose of UNASUR?

UNASUR was created to promote the political, social, and economic integration of South American nations, allowing them to coordinate policies and resolve regional conflicts independently.

Where is the South American Parliament located?

The South American Parliament is located in Cochabamba, Bolivia.

Which countries are members of UNASUR?

The member states include Argentina, Bolivia, Brazil, Colombia, Guyana, Peru, Suriname, and Venezuela, though some have faced periods of suspension or withdrawal.

What is the Bank of the South?

The Bank of the South is a financial institution established by UNASUR member states to provide funding for regional development and reduce dependence on external lenders.

What are the official languages of the union?

The official languages are Spanish, Portuguese, English, and Dutch, reflecting the linguistic diversity of the South American continent.