ABC countries

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Rómulo S. Naón of Argentina and Robert F. Rose in Niagara Falls in 1914
Argentina, Brazil and Chile in green colours.

ABC countries, or ABC powers, refers to the South American countries of Argentina, Brazil and Chile, which are seen as the three most powerful, most influential and wealthiest countries in South America. The term was mostly used in the first half of the 20th century, when they worked together to develop common interests and a coordinated approach to issues in the region with relatively little influence from outside powers, in contrast with the Cold War governments.


During the early 20th century Argentina, Brazil, and Chile engaged in a naval arms race, beginning with Brazil purchasing three dreadnoughts in response to the recently-concluded Argentine-Chilean naval arms race.

The Niagara Falls peace conference is the first well-known use of the term "ABC". On May 20, 1914, the three countries met in Niagara Falls, Ontario, Canada, to mediate between the United States and Mexico after increasing tensions over the Tampico Affair, the United States occupation of Veracruz, and developing issues that led to the Mexican Revolution. At the conference, the United States was represented by Frederick William Lehmann, a former United States Solicitor General, and Joseph Rucker Lamar, an Associate Justice of the Supreme Court of the United States.[1]

In 1942 the ABC countries, with the United States, mediated in the peace terms of the Ecuadorian–Peruvian War. This led to the loss of all disputed territory in the Amazon Basin that was claimed by Ecuador before the war.[2]

See also[edit]


  1. ^ Small, Michael, The Forgotten Peace: Mediation at Niagara Falls, University of Ottawa Press 2009, ISBN 978-0-7766-0712-2
  2. ^ PDF

External links[edit]