South America
Argentina-Brazil
- Puerto Iguazú-Foz do Iguaçu
- 1814 Misiones is claimed by Argentina, border between Argentina and Portugal
- Posadas-Pato Branco
- 1927 Border between Argentina and Brazil is settled
- Posadas-Porto Alegre
- 1814 Misiones is claimed by Argentina, border between Argentina and Portugal
- Corrientes-Santa Maria
- 1820 After the division of the territory of the Liga Federal, border between the United Provinces of South America (Argentina) and Portugal
Argentina-Bolivia
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- 1825 Bolivian independence from the United Provinces of South America
- 1925 Final border treaty
Argentina-Chile
- Salta-Antofagasta
- 1884 Chile conquers the Bolivian Antofagasta Region
- 1899 Border settled
- Mendoza-Santiago de Chile
- 1810 The United Provinces of South America (Argentina) becomes independent, border between Argentina and Spain
- 1818 Chile becomes independent with help from Argentina
- From Comodoro Rivadavia-Coihaique to Ushuaia-Punta Arenas
- 1881 Boundary treaty of 1881 between Chile and Argentina
Argentina-Paraguay
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- 1870 Border established after the Paraguayan War
Argentina-Uruguay
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- 1820 Liga Federal is dissolved and the United Provinces of South America annexes the western provinces, creating today's border
- 1821 The remainder of Liga Federal is annexed by the United Kingdom of Portugal, Brazil and the Algarves
- 1825 Uruguay declares independence
- 1828 Uruguayan independence is recognized
Bolivia-Brazil
- La Paz-Rio Branco
- 1903 Treaty of Petropolis, Bolivia cedes Acre to Brazil
- Riberalta-Bom Comérico
- 1867 Bolivia cells northern Acre to Brazil
- La Paz-Porto Velho
- 1822 Brazilian independence, border between Brazil and Spain
- 1825 Bolivian independence
- Santa Cruz-Cuiabá
- 1867 Bolivia cells parts of eastern Bolivia to Brazil
- 1927 Final border treaty
Bolivia-Chile
- Julaca-Antofagasta
- 1884 Chile conquers the Bolivian Antofagasta Region
- La Paz-Arica
- 1825 Bolivian independence, border between Bolivia and Peru
- 1880 Arica is conquered by Chile
Bolivia-Paraguay
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- 1938 Chaco War ends with a truce, the current border created
- 2009 A final treaty is signed to clearly mark the border
Bolivia-Peru
- La Paz-Arequipa
- 1824 Spanish defeated in Peru, border between Peru and Spain
- 1825 Bolivian independence
- Riberalta-Cuzco
- 1909 Border settled
Brazil-Colombia
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- 1907 Treaty of Bogotá, Brazil and Colombia agree on most of the border
- 1928 The Tratado de Límites y Navegación Fluvial is signed, settling the border
Brazil-France
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- 1713 The Treaty of Utrecht creates a border between France and Portugal.
- 1822 Brazil obtains independence
Brazil-Guyana
- Santarém-Georgetown
- 1822 Brazilian independence, border between Brazil and the United Kingdom
- 1966 Guyana becomes independent
- Boa Vista-Georgetown
- 1904 Italy arbiters in a border dispute, border between Brazil and the British Empire
- 1966 Guyana becomes independent
- Boa Vista-Imbaimadai
- 1822 Brazilian independence, border between Brazil and the United Kingdom
- 1966 Guyana becomes independent
Brazil-Paraguay
- Campo Grande-Forte Olimpo
- 1870 Paraguay is defeated in the Paraguayan War and loses territory to Brazil, border between Brazil and the disputed Chaco area, claimed by both Bolivia and Paraguay
- 1935 After the Chaco War
- Campo Grande-Asunción
- 1870 Paraguay is defeated in the Paraguayan War and loses territory to Brazil
- Cascavel-Asunción
- 1811 Paraguay becomes independent, border between Paraguay and Portugal
- 1822 Brazilian independence
Brazil-Peru
- Eirunepé-Iquitos
- 1851 Border agreement
- Rio Branco-Lima
- 1909 Border agreement
Brazil-Suriname
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- 1906 Border between Brazil and the Netherlands defined in the Treaty of Limits
- 1975 Suriname obtains independence
Brazil-Uruguay
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- 1825 Uruguay declares independence
- 1828 Uruguay's independence is accepted by Brazil
Brazil-Venezuela
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- 1777 First Treaty of San Ildefonso is signed designating the border between Spain and Portugal
- 1819 Gran Colombia becomes independent
- 1822 Brazilian becomes independent
- 1830 Venezuela becomes independent
Colombia-Ecuador
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- 1830 Ecuador becomes independent from Colombia
- 1916 Final border treaty
Colombia-Panama
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- 1903 Panama becomes independent from Colombia
Colombia-Peru
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- 1922 Border agreement between Colombia and Peru, territory disputed with Ecuador
- 1942 Ecuador loses a war versus Peru
Colombia-Venezuela
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- 1830 Venezuela becomes independent from Colombia
Ecuador-Peru
- Quito-Iquitos
- 1942 After the Ecuadorian–Peruvian War, disputed
- Cuenca-Sullana
- 1830 Ecuador becomes independent, disputed
France-Suriname
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- 17th century, border between France and the Netherlands.
- 1975 Surinamese independence.
Guyana-Suriname
- Georgetown-Paramaribo
- 1966 Guyana becomes independent, border between Guyana and the Netherlands
- 1975 Suriname becomes independent
- Joli-Majoli
- 1966 Guyana becomes independent, border between Guyana and the Netherlands
- 1975 Suriname becomes independent, disputed
Guyana-Venezuela
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- 1899 Border settled between Venezuela and the British Empire
- 1966 Guyana becomes independent, border disputed
Read more about this topic: List Of Land Borders With Dates Of Establishment
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