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Provinces

Argentina is a federation of twenty-three provinces and one autonomous city, Buenos Aires. Provinces are divided for administration purposes into departments and municipalities, except for Buenos Aires Province, which is divided into partidos. The City of Buenos Aires is divided into communes.

Provinces hold all the power that they chose not to delegate to the federal government; they must be representative republics and must not contradict the Constitution. Beyond this they are fully autonomous: they enact their own constitutions, freely organize their local governments, and own and manage their natural and financial resources. Some provinces have bicameral legislatures, while others have unicameral ones.

La Pampa and Chaco became provinces in 1951. Misiones did so in 1953, and Formosa, Neuquén, Río Negro, Chubut and Santa Cruz, in 1955. The last national territory, Tierra del Fuego, became the Tierra del Fuego, Antártida e Islas del Atlántico Sur Province in 1990. It has three components, although two are nominal because they are not under Argentine sovereignty. The first is the Argentine part of Tierra del Fuego; the second is an area of Antarctica claimed by Argentina that overlaps with similar areas claimed by the UK and Chile; the third comprises the two disputed British Overseas Territories of the Falkland Islands and South Georgia and the South Sandwich Islands.