description Uruguayan Independence Overview
Uruguayan independence emerged from conflicts over the Banda Oriental, a territory contested by Spain, Portugal, Brazil, and the United Provinces of the Rio de la Plata. The Thirty-Three Orientals launched an uprising against Brazilian rule in 1825, helping trigger the Cisplatine War. British mediation produced the 1828 Preliminary Peace Convention, under which Brazil and the United Provinces recognized an independent Uruguayan state.
help Uruguayan Independence FAQ
Who were the Thirty-Three Orientals?
The Thirty-Three Orientals were a group of patriots led by Juan Antonio Lavalleja and associated with Manuel Oribe. In 1825 they launched an uprising against Brazilian rule in the Banda Oriental, the territory that became Uruguay. [Uruguayan Army historical study](https://uuee.ejercito.mil.uy/eehh/2024/11/08/desembarco-de-los-33-orientales/)
What was the Banda Oriental before Uruguay became independent?
The Banda Oriental was a contested territory shaped by Spanish, Portuguese, Brazilian, and Río de la Plata interests. Brazil incorporated it as the Cisplatine Province in 1821, which helped trigger the 1825 revolt. [Uruguayan education authority](https://www.anep.edu.uy/25-de-agosto-de-1825)
What was the Cisplatine War?
The Cisplatine War was the 1825 to 1828 conflict between the Empire of Brazil, the United Provinces of the Río de la Plata, and forces seeking an independent Uruguay. The conflict ended through the Preliminary Peace Convention of 1828, with British mediation. [Uruguayan education authority](https://www.anep.edu.uy/25-de-agosto-de-1825)
When did Uruguay become an independent country?
The 1828 peace settlement recognized the creation of the Oriental Republic of Uruguay. Uruguay's first constitution was sworn in 1830, giving the new state its initial constitutional framework. [Uruguayan education authority](https://www.anep.edu.uy/25-de-agosto-de-1825)
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