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Events on Saturday 10 December 1825 1
1825Cisplatine War BeginsBrazil declares war on Argentina over Uruguayan territoryOn 10 December 1825, Emperor Pedro I of Brazil declared war on the United Provinces of the Rio de la Plata after Uruguayan leaders declared independence from Brazil and union with Argentina. The war over the Banda Oriental continued until 1828 and ended with Uruguay established as an independent buffer state.