Official nameRepública Argentina (Argentine Republic)CapitalBuenos AiresPopulation estimate (2015)43·42 millionInternet domain extension.arCurrencyThe peso (ARS) has been in circulation since 1 January 1992.TerritoryThe second largest country in South America, the Argentine Republic is bounded in the north by Bolivia, in the north-east by Paraguay, in the east by Brazil, Uruguay and the Atlantic Ocean, and the west by Chile.LanguagesSpanish is the national language, while 2% speak Italian and a further 1% speak other languages.Source: The Statesman's Yearbook 2018. Palgrave Macmillan, London Synonyms and related words