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This article is part of a series on the politics and government of Uruguay |
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Uruguay is a presidential republic in which the President (Spanish : Presidente) is both the head of state and head of government. The following is a list of all the people who have held the office of President of Uruguay since 6 November 1830 (when the first constitution was adopted), with the exception of those who held the office of "President" under the National Council of Government, which served as the country's executive directory from 1955 to 1967. The first president of this list is Fructuoso Rivera, who held the office twice and once as part of the Triumvirate that ruled Uruguay from 1853 to 1854.
Uruguay, officially the Oriental Republic of Uruguay, is a country in the southeastern region of South America. It borders Argentina to its west and Brazil to its north and east, with the Río de la Plata to the south and the Atlantic Ocean to the southeast. Uruguay is home to an estimated 3.44 million people, of whom 1.8 million live in the metropolitan area of its capital and largest city, Montevideo. With an area of approximately 176,000 square kilometers (68,000 sq mi), Uruguay is geographically the second-smallest nation in South America, after Suriname.
A presidential system is a democratic and republican system of government where a head of government leads an executive branch that is separate from the legislative branch. This head of government is in most cases also the head of state, which is called president.
A republic is a form of government in which the country is considered a “public matter”, not the private concern or property of the rulers. The primary positions of power within a republic are not inherited, but are attained through democracy, oligarchy or autocracy. It is a form of government under which the head of state is not a hereditary monarch.
Most of the Presidents of Uruguay have belonged to the Colorado Party, a traditionally conservative party founded by Rivera in 1836. The first free democratic elections for President were held in 1920. The current president is Tabaré Vázquez of the Broad Front, who was elected for a second term in the 2014 presidential election.
The Colorado Party is a political party in Uruguay.
Conservatism is a political and social philosophy promoting traditional social institutions in the context of culture and civilization. The central tenets of conservatism include tradition, human imperfection, organic society, hierarchy, authority, and property rights. Conservatives seek to preserve a range of institutions such as religion, parliamentary government, and property rights, with the aim of emphasizing social stability and continuity. The more traditional elements—reactionaries—oppose modernism and seek a return to "the way things were".
Tabaré Ramón Vázquez Rosas is a Uruguayan politician serving as the 41st and current President of Uruguay since 2015. He previously served as President from 2005 to 2010 as the 39th officeholder. A physician (oncologist), he is a member of the leftist Broad Front coalition.
Province part of the United Provinces of the Rio de la Plata.
The United Provinces of the Río de la Plata, earlier known as the United Provinces of South America, a union of provinces in the Río de la Plata region of South America, emerged from the May Revolution in 1810 and the Argentine War of Independence of 1810–1818. It comprised most of the former Viceroyalty of the Río de la Plata dependencies and had Buenos Aires as its capital.
№ | Portrait | Name (Birth–Death) | Term of office | Notes | |
---|---|---|---|---|---|
1 | Nicolás Rodríguez Peña (1775–1853) | 9 July 1814 | 25 August 1814 | Governor. Appointed by Gervasio Antonio de Posadas, Supreme Director of the United Provinces of the Río de la Plata. | |
2 | Miguel Estanislao Soler (1783–1849) | 25 August 1814 | 25 February 1815 | Governor. | |
3 | Fernando Otorgués (1774–1831) | 26 February 1815 | July 1815 | Governor. Appointed by José Gervasio Artigas. | |
4 | Miguel Barreiro (1789–1848) | July 1815 | 20 January 1817 | Governor. Appointed by José Gervasio Artigas. |
After the Portuguese conquest of the Banda Oriental the Oriental Province became a province of the United Kingdom of Portugal, Brazil and the Algarves and a province of the Empire of Brazil after 1822.
The Portuguese conquest of the Banda Oriental was the armed-conflict that took place between 1816 and 1820 in the Banda Oriental, for control of what today comprises the whole of the Republic of Uruguay, the northern part of the Argentine Mesopotamia and southern Brazil. The four-year armed-conflict resulted in the annexation of the Banda Oriental into the United Kingdom of Portugal, Brazil and the Algarves as the Brazilian province of Cisplatina.
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 with the Kingdom of Portugal and the Kingdom of the Algarves, constituting a single state consisting of three kingdoms.
The Empire of Brazil was a 19th-century state that broadly comprised the territories which form modern Brazil and Uruguay. Its government was a representative parliamentary constitutional monarchy under the rule of Emperors Dom Pedro I and his son Dom Pedro II. A colony of the Kingdom of Portugal, Brazil became the seat of the Portuguese colonial Empire in 1808, when the Portuguese Prince regent, later King Dom João VI, fled from Napoleon's invasion of Portugal and established himself and his government in the Brazilian city of Rio de Janeiro. João VI later returned to Portugal, leaving his eldest son and heir, Pedro, to rule the Kingdom of Brazil as regent. On 7 September 1822, Pedro declared the independence of Brazil and, after waging a successful war against his father's kingdom, was acclaimed on 12 October as Pedro I, the first Emperor of Brazil. The new country was huge, sparsely populated and ethnically diverse.
№ | Portrait | Name (Birth–Death) | Term of office | Notes | |
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5 | Carlos Frederico Lecor (1764–1836) | 20 January 1817 | 3 February 1826 | Governor. | |
6 | Francisco de Paula Magessi Tavares de Carvalho (1769–1847) | 3 February 1826 | 27 August 1828 | Governor. |
In the Congress of Florida the Oriental Province declared independence from the Empire of Brazil and reunited with the United Provinces of the Rio de la Plata.
№ | Portrait | Name (Birth–Death) | Term of office | Notes | |
---|---|---|---|---|---|
7 | Juan Antonio Lavalleja (1784–1853) | 19 September 1825 | 5 July 1826 | Governor. Appointed by the Congress of Florida. | |
8 | Joaquín Suárez (1781–1868) | 5 July 1826 | 12 October 1827 | Governor. | |
9 | Luis Eduardo Pérez (1774–1841) | 12 October 1827 | 27 August 1828 | Governor. Appointed by Juan Antonio Lavalleja. |
After the Preliminary Peace Convention the Oriental Province gained effective independence from the Empire of Brazil and the United Provinces of the Rio de la Plata.
№ | Portrait | Name (Birth–Death) | Term of office | Notes | |
---|---|---|---|---|---|
9 | Luis Eduardo Pérez (1774–1841) | 27 August 1828 | 1 December 1828 | Governor and Provisional Captain General. Appointed by Juan Antonio Lavalleja. | |
8 | Joaquín Suárez (1781–1868) | 1 December 1828 | 22 December 1828 | Governor and Provisional Captain General. Appointed by the General Constituent Assembly. | |
10 | José Rondeau (1775–1844) | 22 December 1828 | 17 April 1830 | Governor and Provisional Captain General. Appointed by the General Constituent Assembly. | |
7 | Juan Antonio Lavalleja (1784–1853) | 17 April 1830 | 28 June 1830 | Governor and Provisional Captain General. Appointed by the General Constituent Assembly. |
The Constitution of 1830 comes into force.
№ | Portrait | Name (Birth–Death) | Term of office | Party | Elected | Notes | ||
---|---|---|---|---|---|---|---|---|
7 | Juan Antonio Lavalleja (1784–1853) | 28 June 1830 | 24 October 1830 | — | — | Governor and Provisional Captain General. Appointed by the General Constituent Assembly. | ||
9 | Luis Eduardo Pérez (1774–1841) | 24 October 1830 | 6 November 1830 | — | — | President of the Senate exercising the Executive Power. | ||
10 | Fructuoso Rivera (1784–1854) | 6 November 1830 | 24 October 1834 | Colorado | 1830 | Resigned. | ||
11 | Carlos Anaya (1777–1862) | 24 October 1834 | 1 March 1835 | Colorado | — | President of the Senate exercising the Executive Power. | ||
12 | Manuel Oribe (1792–1857) | 1 March 1835 | 24 October 1838 | National | 1835 | Resigned. | ||
13 | Gabriel Antonio Pereira (1794–1861) | 24 October 1838 | 1 March 1839 | Colorado | — | President of the Senate exercising the Executive Power. | ||
10 | Fructuoso Rivera (1784–1854) | 1 March 1839 | 1 March 1843 | Colorado | 1839 | |||
12 | Manuel Oribe (1792–1857) | 16 February 1843 | 8 October 1851 | National | — | Self-proclaimed president of the Gobierno del Cerrito, during the Uruguayan Civil War. | ||
8 | Joaquín Suárez (1781–1868) | 1 March 1843 | 15 February 1852 | Colorado | — | President of the Senate exercising the Executive Power. President of the Gobierno de la Defensa, during the Uruguayan Civil War. | ||
14 | Bernardo Prudencio Berro (1803–1868) | 15 February 1852 | 1 March 1852 | National | — | President of the Senate exercising the Executive Power. | ||
15 | Juan Francisco Giró (1791–1863) | 1 March 1852 | 25 September 1853 | National | 1852 | Ousted from office by a coup d'état. | ||
16 | Venancio Flores (1808–1868) | 25 September 1853 | 12 March 1854 | Colorado | — | Triumvirate. Fructuoso Rivera and Juan Antonio Lavalleja died in office. | ||
10 | Fructuoso Rivera (1784–1854) | 25 September 1853 | 13 January 1854 | Colorado | ||||
7 | Juan Antonio Lavalleja (1784–1853) | 25 September 1853 | 22 October 1853 | — | ||||
16 | Venancio Flores (1808–1868) | 12 March 1854 | 10 September 1855 | Colorado | 1854 | Resigned. | ||
17 | Luis Lamas (1898–1904) | 29 August 1855 | 10 September 1855 | Conservative | — | Self-proclaimed president after the Rebellion of the Conservatives . | ||
18 | Manuel Basilio Bustamante (1785–1863) | 10 September 1855 | 15 February 1856 | Colorado | — | President of the Senate exercising the Executive Power. | ||
19 | José María Plá (1794–1869) | 15 February 1856 | 1 March 1856 | Colorado | — | President of the Senate exercising the Executive Power. | ||
13 | Gabriel Antonio Pereira (1794–1861) | 1 March 1856 | 1 March 1860 | Colorado | 1856 | |||
14 | Bernardo Prudencio Berro (1803–1868) | 1 March 1860 | 1 March 1864 | National | 1860 | |||
20 | Atanasio Cruz Aguirre (1801–1875) | 1 March 1864 | 15 February 1865 | National | — | President of the Senate exercising the Executive Power. Resigned after the Brazilian invasion. | ||
21 | Tomás Villalba (1805–1886) | 15 February 1865 | 20 February 1865 | National | — | President of the Senate exercising the Executive Power. Resigned after the Brazilian invasion. | ||
16 | Venancio Flores (1808–1868) | 20 February 1865 | 15 February 1868 | Colorado | — | De facto president after the Brazilian invasion. Assumed power as Provisional Governor for 3 years. | ||
22 | Pedro Varela (1837–1906) | 15 February 1868 | 1 March 1868 | Colorado | — | President of the Senate exercising the Executive Power. | ||
23 | Lorenzo Batlle (1810–1887) | 1 March 1868 | 1 March 1872 | Colorado | 1868 | |||
24 | Tomás Gomensoro Albín (1810–1900) | 1 March 1872 | 1 March 1873 | Colorado | — | President of the Senate exercising the Executive Power. | ||
25 | José Eugenio Ellauri (1834–1894) | 1 March 1873 | 22 January 1875 | Colorado | 1873 | Forced to resign by a coup d'état. | ||
22 | Pedro Varela (1837–1906) | 22 January 1875 | 10 March 1876 | Colorado | — | Appointed by the General Assembly. Forced to resign by a coup d'état. | ||
– | Lorenzo Latorre (1844–1916) | 10 March 1876 | 1 March 1879 | Colorado | — | Assumed power as Provisional Governor. | ||
26 | 1 March 1879 | 15 March 1880 | 1879 | Resigned. | ||||
27 | Francisco Antonino Vidal (1825–1889) | 15 March 1880 | 1 March 1882 | Colorado | — | Appointed as President by the General Assembly to finish the presidential period 1879-1883. Resigned. | ||
28 | Máximo Santos (1847–1889) | 1 March 1882 | 1 March 1886 | Colorado | — | Appointed by the General Assembly for a term of 4 years. | ||
27 | Francisco Antonino Vidal (1825–1889) | 1 March 1886 | 24 May 1886 | Colorado | 1886 | Resigned. | ||
28 | Máximo Santos (1847–1889) | 24 May 1886 | 18 November 1886 | Colorado | — | President of the Senate exercising the Executive Power. Resigned. | ||
29 | Máximo Tajes (1852–1912) | 18 November 1886 | 1 March 1890 | Colorado | — | Appointed as President by the General Assembly to finish the presidential period 1886-1890. | ||
30 | Julio Herrera y Obes (1841–1912) | 1 March 1890 | 1 March 1894 | Colorado | 1890 | |||
31 | Duncan Stewart (1833–1923) | 1 March 1894 | 21 March 1894 | Colorado | — | President of the Senate exercising the Executive Power. | ||
32 | Juan Idiarte Borda (1844–1897) | 21 March 1894 | 25 August 1897 | Colorado | 1894 | Assassinated. | ||
33 | Juan Lindolfo Cuestas (1837–1905) | 25 August 1897 | 10 February 1898 | Colorado | — | President of the Senate exercising the Executive Power. | ||
10 February 1898 | 15 February 1899 | De facto president following a self-coup. Resigned. | ||||||
34 | José Batlle y Ordóñez (1856–1929) | 15 February 1899 | 1 March 1899 | Colorado | — | President of the Senate exercising the Executive Power. | ||
33 | Juan Lindolfo Cuestas (1837–1905) | 1 March 1899 | 1 March 1903 | Colorado | 1899 | |||
34 | José Batlle y Ordóñez (1856–1929) | 1 March 1903 | 1 March 1907 | Colorado | 1903 | |||
35 | Claudio Williman (1861–1934) | 1 March 1907 | 1 March 1911 | Colorado | 1907 | |||
34 | José Batlle y Ordóñez (1856–1929) | 1 March 1911 | 1 March 1915 | Colorado | 1911 | |||
36 | Feliciano Viera (1872–1927) | 1 March 1915 | 1 March 1919 | Colorado | 1915 |
The Constitution of 1918 comes into force. According to the Constitution, the president is elected by direct popular election for a term of five years. He may be reelected any number of times, but is ineligible for immediate reelection.
№ | Portrait | Name (Birth–Death) | Term of office | Party | Elected | Notes | Vice President | ||
---|---|---|---|---|---|---|---|---|---|
37 | Baltasar Brum (1883–1933) | 1 March 1919 | 1 March 1923 | Colorado | 1919 | The President served as part of the executive alongside the National Administration Council , headed by a President:
| Post not established | ||
38 | José Serrato (1868–1960) | 1 March 1923 | 1 March 1927 | Colorado | 1922 | The President served as part of the executive alongside the National Administration Council, headed by a President:
| |||
39 | Juan Campisteguy (1859–1937) | 1 March 1927 | 1 March 1931 | Colorado | 1926 | The President served as part of the executive alongside the National Administration Council, headed by a President:
| |||
40 | Gabriel Terra (1873–1942) | 1 March 1931 | 31 March 1933 | Colorado | 1930 | The President served as part of the executive alongside the National Administration Council, headed by a President:
| |||
40 | 31 March 1933 | 18 May 1934 | — | De facto president following a self-coup. | |||||
18 May 1934 | 19 June 1938 | Provisional president elected by the 3rd National Constituent Convention. | Alfredo Navarro | ||||||
41 | Alfredo Baldomir (1884–1948) | 19 June 1938 | 21 February 1942 | Colorado | 1938 | César Charlone | |||
– | 21 February 1942 | 1 March 1943 | — | De facto president following a self-coup. | |||||
42 | Juan José de Amézaga (1881–1956) | 1 March 1943 | 1 March 1947 | Colorado | 1942 | Alberto Guani | |||
43 | Tomás Berreta (1875–1947) | 1 March 1947 | 2 August 1947 | Colorado | 1946 | Died in office. | Luis Batlle Berres | ||
44 | Luis Batlle Berres (1897–1964) | 2 August 1947 | 1 March 1951 | Colorado | — | Vice-president under Berreta, assumed the presidency after his death. | Alfeo Brum | ||
45 | Andrés Martínez Trueba (1884–1959) | 1 March 1951 | 1 March 1952 | Colorado | 1950 | The post of President was replaced by the National Council of Government. | |||
46 | National Council of Government 1952–55 | 1 March 1952 | 1 March 1955 | Colorado | — | The National Council of Government was headed by a President for the remaining of the 1951–1955 period:
| Post abolished | ||
47 | National Council of Government 1955–59 | 1 March 1955 | 1 March 1959 | Colorado | 1954 | The National Council of Government was headed by a President rotating every year:
| |||
48 | National Council of Government 1959–63 | 1 March 1959 | 1 March 1963 | National | 1958 | The National Council of Government was headed by a President rotating every year:
| |||
49 | National Council of Government 1963–67 | 1 March 1963 | 1 March 1967 | National | 1962 | The National Council of Government was headed by a President rotating every year:
| |||
50 | Óscar Diego Gestido (1901–1967) | 1 March 1967 | 6 December 1967 | Colorado | 1966 | Died in office. | Jorge Pacheco Areco | ||
51 | Jorge Pacheco Areco (1920–1998) | 6 December 1967 | 1 March 1972 | Colorado | — | Vice-president under Gestido, assumed the presidency after his death. | Alberto Abdala | ||
52 | Juan María Bordaberry (1928–2011) | 1 March 1972 | 27 June 1973 | Colorado | 1971 | Jorge Sapelli | |||
52 | 27 June 1973 | 12 June 1976 | — | 1973 Uruguayan coup d'état, start of the dictatorship between 1973 and 1985. Ousted from office. | Vacant | ||||
53 | Alberto Demicheli (1896–1980) | 12 June 1976 | 1 September 1976 | Colorado | — | Appointed by the Armed Forces. Ousted from office. | |||
54 | Aparicio Méndez (1904–1988) | 1 September 1976 | 1 September 1981 | National | — | Appointed by the Armed Forces for a term of 5 years. | |||
55 | Gregorio Álvarez (1925–2016) | 1 September 1981 | 12 February 1985 | Military | — | Appointed by the Armed Forces. Resigned. | |||
56 | Rafael Addiego Bruno (1923–2014) | 12 February 1985 | 1 March 1985 | Civic Union | — | President of the Supreme Court, appointed by the Armed Forces. | |||
57 | Julio María Sanguinetti (1936–) | 1 March 1985 | 1 March 1990 | Colorado | 1984 | First democratic President after the 1973-1985 dictatorship. | Enrique Tarigo | ||
58 | Luis Alberto Lacalle (1941–) | 1 March 1990 | 1 March 1995 | National | 1989 | Gonzalo Aguirre | |||
59 | Julio María Sanguinetti (1936–) | 1 March 1995 | 1 March 2000 | Colorado | 1994 | Hugo Batalla | |||
Hugo Fernández Faingold | |||||||||
60 | Jorge Batlle (1927–2016) | 1 March 2000 | 1 March 2005 | Colorado | 1999 | Luis Hierro López | |||
61 | Tabaré Vázquez (1940–) | 1 March 2005 | 1 March 2010 | Broad Front | 2004 | Rodolfo Nin Novoa | |||
62 | José Mujica (1935–) | 1 March 2010 | 1 March 2015 | Broad Front | 2009 | Danilo Astori | |||
63 | Tabaré Vázquez (1940–) | 1 March 2015 | Incumbent (Term ends on 1 March 2020) | Broad Front | 2014 | Raúl Fernando Sendic | |||
Lucía Topolansky |
The history of Uruguay comprises different periods: the pre-Columbian time or early history, the colonial period (1516–1811), the period of nation-building (1811–1830), and the history of Uruguay as an independent country.
The Argentine Confederation was the last predecessor state of modern Argentina; its name is still one of the official names of the country according to the Argentine Constitution, Article 35. It was the name of the country from 1831 to 1852, when the provinces were organized as a confederation without a head of state. The governor of Buenos Aires Province managed foreign relations during this time. Under his rule, the Argentine Confederation resisted attacks by Brazil, Bolivia, Uruguay, France and the UK, as well as other Argentine factions during the Argentine Civil Wars.
Manuel Ceferino Oribe y Viana was the 2nd Constitutional president of Uruguay.
Banda Oriental, or more fully Banda Oriental del 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 Brazil Rio Grande do Sul; and some of Santa Catarina, Brazil. It was the easternmost territory of the Viceroyalty of the Río de la Plata.
The Cisplatine War, also known as the Argentine-Brazilian War or in the Argentine and Uruguayan historiography as Brazil War, was an armed conflict over an area known as Banda Oriental or the "Eastern Bank" in the 1820s between the United Provinces of the Río de la Plata and the Empire of Brazil in the aftermath of the United Provinces' independence from Spain.
The Treinta y Tres Orientales was a militant revolutionary group led by Juan Antonio Lavalleja and Manuel Oribe against the Empire of Brazil. Their actions culminated in the foundation of modern Uruguay. They became famous by the name of the Treinta y Tres Orientales when, in 1825, they began an insurrection for the independence of Oriental Province, a historical territory encompassing modern Uruguay and part of modern Brazilian Rio Grande do Sul State, from Brazilian control.
The office of Governor of Montevideo was created shortly after the Treaty of Madrid in 1750 by Ferdinand VI of Spain, with the objective of establishing more effective control of the Banda Oriental area of the Río de la Plata, present day Uruguay.
The Constitution of Uruguay is the supreme law of Uruguay. Its first version was written in 1830 and its last amendment was made in 2004.
The Federal League or League of Free Peoples was an alliance of provinces in what is now Uruguay, Argentina and Brazil that aimed to establish a confederal organization for the state that was emerging from the May Revolution in the war of independence against the Spanish Empire.
Cisplatina Province or Cisplatine Province was a Brazilian province in existence from 1821 to 1828 created by the Luso-Brazilian annexation of the Oriental Province. From 1815 until 1822 Brazil was part of the United Kingdom of Portugal, Brazil and the Algarves. After the independence of Brazil and the formation of the Empire of Brazil the Cisplatine Province remained part of it. In 1828, following the Treaty of Montevideo, the Cisplatine Province became independent as Uruguay.
Brazil–Uruguay relations encompass many complex relations over the span of three centuries, beginning in 1680 with the establishment of the Colônia do Sacramento, to the present day, between the Federative Republic of Brazil and the Oriental Republic of Uruguay. Brazil and Uruguay are neighbouring countries in South America, and share close political, economic and cultural ties. The singularity of the bilateral relationship between the two countries originates from a strong historical connection – marked by important events, such as the establishment of the Colônia do Sacramento in 1680, the invasion of the Banda Oriental by Brazil in 1815 and the subsequent creation of the Província Cisplatina, and Uruguay's independence from Brazil in 1828. The bilateral relationship was further defined by the Uruguayan Civil War (1839–1851) and the Paraguayan War (1864–1870).
In the Treaty of Montevideo, signed on 27 August 1828, after British mediation, Brazil and Argentina recognized the independence of Uruguay.
The Platine War was fought between the Argentine Confederation and an alliance consisting of the Empire of Brazil, Uruguay, and the Argentine provinces of Entre Ríos and Corrientes. The war was part of a long-running dispute between Argentina and Brazil for influence over Uruguay and Paraguay, and hegemony over the Platine region. The conflict took place in Uruguay and northeastern Argentina, and on the Río de la Plata. Uruguay's internal troubles, including the long-running Uruguayan Civil War, were heavily influential factors leading to the Platine War.
The Argentine Civil Wars were a series of civil wars that took place in Argentina from 1814 to 1880. These conflicts were separate from the Argentine War of Independence (1810–1820), though they first arose during this period.
The rise of the Argentine Republic was a process that took place in the first half of the 19th century in South America. The Republic has its origins in the Viceroyalty of the Río de la Plata, a colony of the Spanish Empire. The King of Spain appointed a viceroy to oversee the governance of the colony. The 1810 May Revolution deposed the viceregal representative and, along with the Argentine war of independence, started a process to replace the foreign monarchy with an indigenous republican state. All proposals to organize a local monarchy failed, and no local monarch was ever crowned.
The dissolution of the Viceroyalty of the Río de la Plata was the independence and breaking up of the Spanish colony in South America. Most of the viceroyalty is now part of Argentina, and other regions belong to Bolivia, Brazil, Paraguay and Uruguay.
The Argentina–Uruguay border is a line of 579 km marked by the Uruguay River, and is the border between Argentina and Uruguay. It starts in a triple border Argentina-Uruguay-Brazil, at the mouth of the Quaraí River 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, Entre Rios and Buenos Aires, until the confluence of the Uruguay and the Paraná rivers into the Rio de la Plata.