a republic in southern South America: colonized by the Spanish from 1516 onwards; gained independence in 1816 and became a republic in 1852; ruled by military dictatorships for much of the 20th century; civilian rule restored in 1983; consists chiefly of subtropical plains and forests (the Chaco) in the north, temperate plains (the pampas) in the central parts, the Andes in the west, and an infertile plain extending to Tierra del Fuego in the south (Patagonia); an important meat producer. Language: Spanish. Religion: Roman Catholic. Currency: peso. Capital: Buenos Aires. Pop: 44 271 041 (2017 est). Area: 2 776 653 sq km (1 072067 sq miles)