Argentine and Chilean governments no relation Minas Geraes-class battleship
A naval arms race among Argentina, Brazil and Chile—the wealthiest and most powerful countries in South America—began in the early twentieth century when the Brazilian government ordered three dreadnoughts, formidable battleships whose capabilities far outstripped older vessels in the world's navies.
In 1904, the Brazilian legislature allocated substantial funds to improve the country's naval forces. Proponents of this plan believed that they needed a strong navy to become an international power and combat recent naval expansions in Argentina and Chile. The revolutionary design of the 1906 British warship HMS Dreadnought prompted the Brazilians to alter these plans and redirect their money into constructing three Minas Geraes-class dreadnoughts. These warships, the most powerful in the world, entered service at a time when dreadnoughts were an important factor in a nation's international prestige. They therefore brought global attention to what was perceived to be a newly ascendant country.
Although the first two dreadnoughts were completed and delivered, the third faced a different fate. Preliminarily named Rio de Janeiro, the incomplete vessel was sold to the Ottoman Empire in 1913 in the face of a slowing economy, significant political opposition after a 1910 naval revolt, and because the ship was outclassed by ever-larger super-dreadnoughts.
To combat the Brazilian acquisitions, the Argentine and Chilean governments ordered two dreadnoughts each: the Rivadavia class in 1910 and Almirante Latorre class in 1911, respectively. Each were larger and more powerful than preceding dreadnoughts ordered during the arms race. The Argentine ships were particularly controversial, facing both political opposition and shipbuilder outrage from the multi-round bidding process used to select the design of their new ships.
The First World War marked the end of the South American naval arms race, as the countries involved found themselves effectively unable to purchase additional capital ships abroad. The conflict forced the cancelation of a Brazilian super-dreadnought, Riachuelo, before construction began, while the two Chilean dreadnoughts were purchased by the British; one was re-acquired by Chile after the war. Argentina's two dreadnoughts avoided this fate by being built in the then-neutral United States, and they were commissioned in 1914 and 1915.
Although Brazil and Chile's post-war naval expansion plans called for acquiring additional dreadnought-type warships, none were ever constructed. The five dreadnoughts that made it to South American navies would be scrapped in the 1950s.
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