Compuertas de la represa de Salto Grande

The Argentina–Uruguay border is a line of 579 km marked by the

Uruguay River The Uruguay River ( ; ) is a major river in South America. It flows from north to south and forms parts of the boundaries of Brazil, Argentina and Uruguay, separating some of the Argentine provinces of La Mesopotamia from the other two countr ...

, and is the

border Borders are generally defined as geography, geographical boundaries, imposed either by features such as oceans and terrain, or by polity, political entities such as governments, sovereign states, federated states, and other administrative divisio ...

between

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

and

Uruguay Uruguay, officially the Oriental Republic of Uruguay, is a country in South America. It shares borders with Argentina to its west and southwest and Brazil to its north and northeast, while bordering the Río de la Plata to the south and the A ...

. It starts in a triple border Argentina-Uruguay-Brazil, at the mouth of the

Quaraí River The Quaraí or Cuareim River ( Portuguese Rio Quaraí, Spanish Río Cuareim) is a tributary of the Uruguay River. Location The river rises in the Coxilha de Santana (Spanish ''Cuchilla de Santa Ana''), an area of low-lying hills, and runs westwa ...

in the Uruguay. The course follows the Uruguay river, passing west of the Uruguayan departments of Artigas, Salto, Paysandu, Rio Negro, Soriano and Colonia and the Argentine provinces of

Corrientes Corrientes (; Guaraní: Taragui, literally: "Currents") is the capital city of the province of Corrientes, Argentina, located on the eastern shore of the Paraná River, about from Buenos Aires and from Posadas, on National Route 12. It has ...

, Entre Rios and

Buenos Aires Buenos Aires, controlled by the government of the Autonomous City of Buenos Aires, is the Capital city, capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− glob ...

, until the confluence of the Uruguay and the

Paraná Paraná, Paranã or Parana may refer to: Geology * Paraná Basin, a sedimentary basin in South America Places In Argentina *Paraná, Entre Ríos, a city * Paraná Department, a part of Entre Ríos Province In Brazil *Paraná (state), a state ...

rivers into the

Rio de la Plata Rio or Río is the Portuguese and Spanish word for "river". The word also exists in Italian, but is largely obsolete and used in a poetical or literary context to mean "stream". Rio, RIO or Río may also refer to: Places United States * Rio, Fl ...

History

The Uruguay River was always a physical limit that separated the former Eastern Band of the rest of the

Viceroyalty of Rio de La Plata A viceroyalty was an entity headed by a viceroy. It dates back to the Spanish colonization of the Americas in the sixteenth century. British Empire India * India was governed by the Governor-General and Viceroy of India from 1858 to 1947, commo ...

and

Banda Oriental Banda Oriental (Eastern Bank), or more fully Banda Oriental del Río Uruguay, was the name of the South American territories east of the Uruguay River and north of Río de la Plata that comprise the modern nation of Uruguay, the modern state of Ri ...

. Depending on the presence of this river, the border between

and

was not disputed. From 1815 to 1816 the government of the

United Kingdom of Portugal, Brazil and the Algarves The United Kingdom of Portugal, Brazil and the Algarves was a pluricontinental monarchy formed by the elevation of the Portuguese colony named State of Brazil to the status of a kingdom and by the simultaneous union of that Kingdom of Brazil ...

(

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

before

independence Independence is a condition of a nation, country, or state, in which residents and population, or some portion thereof, exercise self-government, and usually sovereignty, over its territory. The opposite of independence is the status of ...

) tried to annex the region of the current Uruguay to Brazil. This occurred with the Brazilian victory against Uruguay during the

Battle of Tacuarembó The Battle of Tacuarembó took place between the Luso-Brazilian forces under the command of José de Castelo Branco Correia, Count of Figueira, and the Artiguist forces of Andrés Latorre in Tacuarembó, modern-day Uruguay. The encounter resulted ...

in 1820. The region was called Province of Cisplatina of already independent Empire of Brazil. It was echoed by Uruguayan supported by troops from Argentina on 25 August 1828. After the war, the Treaty of Montevideo, sovereign Republic of Uruguay was created. The current border was established at that time. The official name of Uruguay, Eastern Republic of Uruguay, says that the country is on the east side of the Uruguay River.

References

Borders of Argentina Borders of Uruguay International borders {{uruguay-geo-stub

History

See also

References