Cisplatina instance of province of Brazil
Cisplatina (Portuguese pronunciation: [sisplaˈtʃĩnɐ]) was a Brazilian province in existence from 1821 to 1828 created by the Luso-Brazilian invasion of the Banda Oriental. From 1815 until 1822 Brazil was a constituent kingdom of the United Kingdom of Portugal, Brazil and the Algarves. After the independence of Brazil and the formation of the Empire of Brazil the Cisplatina province remained part of it. In 1828, following the Preliminary Peace Convention, the Cisplatina province became independent as Uruguay.History
The Banda Oriental had always been a sparsely populated contested border-area between the Spanish and Portuguese Empires. In the First Treaty of San Ildefonso in 1777 the control of the area was given to Spain.In 1811, José Gervasio Artigas, who became Uruguay's national hero, launched a successful revolt against Spain, defeating them on 18 May in the Battle of Las Piedras. In 1813, the Banda Oriental was renamed to Provincia Oriental, becoming part of the United Provinces of the Río de la Plata. In 1814, Artigas formed the Federal League of which he was declared Protector.
The constant growth of influence and prestige of the Federal League frightened the Luso-Brazilian Monarchy (because of its republicanism), and in August 1816 they invaded the Banda Oriental, with the intention of destroying the protector and his revolution. The Luso-Brazilian expeditionary force, thanks to its material superiority, military experience and organization (including in part its European warfare experience), occupied Montevideo on 20 January 1817, and finally, after a three-year struggle in the countryside, defeated the pro-Artigas forces in the Battle of Tacuarembó.
In 1821, the Provincia Oriental del Río de la Plata (present-day Uruguay), was annexed as a province into the Kingdom of Brazil under the name of Cisplatina. The annexation of the province was justified through the "general acclamation" of an Assembly of "Oriental notables" on 18 July 1821.
The borders of Cisplatina were: on the east the Atlantic Ocean, on the south the Río de la Plata, on the west the Uruguay River and on the north the Quaraí river until la Cuchilla de Santa Ana. This means that territories previously belonging to the Provincia Oriental had been annexed to the jurisdiction of Rio Grande do Sul.
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