argentina

Argentina has long played an important role in the continent’s history. Following three centuries of Spanish colonization, Argentina declared independence in 1816, and Argentine nationalists were instrumental in revolutionary movements elsewhere, a fact that prompted 20th-century writer Jorge Luis Borges to observe, “South America’s independence was, to a great extent, an Argentine enterprise.” Torn by strife and occasional war between political factions demanding either central authority (based in Buenos Aires) or provincial autonomy, Argentina tended toward periods of caudillo, or strongman, leadership, most famously under the presidency of Juan Perón. The 1970s ushered in a period of military dictatorship and repression during which thousands of presumed dissidents were “disappeared,” or murdered; this ended in the disastrous Falklands Islands War of 1982, when Argentina invaded the South Atlantic islands it claimed as its own and was defeated by British forces in a short but bloody campaign. Defeat led to the fall of the military regime and the reestablishment of democratic rule, which has since endured despite various economic crises.

Argentina is shaped like an inverted triangle with its base at the top; it is some 880 miles (1,420 km) across at its widest from east to west and stretches 2,360 miles (3,800 km) from the subtropical north to the subantarctic south. The country is bounded by Chile to the south and west, Bolivia and Paraguay to the north, and Brazil, Uruguay, and the Atlantic Ocean to the east. Its undulating Atlantic coastline stretches some 2,900 miles (4,700 km).

Argentina’s varied geography can be grouped into four major regions: the Andes, the North, the Pampas, and Patagonia. The Andean region extends some 2,300 miles (3,700 km) along the western edge of the country from Bolivia to southern Patagonia, forming most of the natural boundary with Chile. It is commonly subdivided into two parts: the Northwest and the Patagonian Andes, the latter of which is discussed below under Patagonia. The North is commonly described in terms of its two main divisions: the Gran Chaco, or Chaco, comprisingthe dry lowlands between the Andes and the Paraná River; and Mesopotamia, an area between the Paraná and Uruguay rivers. The centrally located plains, or Pampas, are grasslands subdivided into arid western and more humid eastern parts called, respectively, the Dry Pampa and the Humid Pampa. Patagonia is the cold, parched, windy region that extends some 1,200 miles (1,900 km) south of the Pampas, from the Colorado River to Tierra del Fuego.

To the southeast, where the parallel to subparallel ranges become lower and form isolated, compact units trending north-south, the flat valleys between are called bolsones(basins). This southeastern section of the Northwest is often called the Pampean Sierras, a complex that has been compared to the Basin and Range region of the western United States. It is characterized by west-facing escarpments and gentler east-facing backslopes, particularly those of the spectacular Sierra de Córdoba. The Pampean Sierras have variable elevations, beginning at 2,300 feet (700 metres) in the Sierra de Mogotes in the east and rising to 20,500 feet (6,250 metres) in the Sierra de Famatina in the west.