United Kingdom of Portugal, Brazil and the Algarves [SEP] dissolved or abolished
Napoleonic invasions of Portugal, and it continued to exist for about one year after the return of the Court to Europe, being "de facto" dissolved in 1822, when Brazil proclaimed its independence. The dissolution of the United Kingdom was accepted by Portugal and formalized "de jure" in 1825, when Portugal recognized the independent Empire of Brazil.
During its period of existence the United Kingdom of Portugal, Brazil and the Algarves did not correspond to the whole of the Portuguese Empire: rather, the united kingdom was the
between Chile and Argentina
"Argentina–Paraguay
- 1870 Border established after the Paraguayan War
"Argentina–Uruguay
- 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