August 25 is Independence Day, celebrates the independence of Uruguay from Brazil in 1825.
Portuguese established “Colonia del Sacramento”, one of the oldest European settlements in the country, in 1680. Montevideo was founded as a military stronghold by the Spanish in the early 18th century, signifying the competing claims over the region.
In 1816, a force of 10,000 Portuguese troops invaded the Banda Oriental (comprising the modern nation of Uruguay, the modern Brazilian State of Rio Grande do Sul and some parts of Santa Catarina) from Brazil; they took Montevideo in January 1817. After nearly four more years of struggle, the Portuguese Kingdom of Brazil annexed the Banda Oriental as a province under the name of “Cisplatina”. The Brazilian Empire became independent of Portugal in 1822. In response to the annexation, the Thirty-Three Orientals, led by Juan Antonio Lavalleja, declared independence on August 25, 1825 supported by the United Provinces of the Río de la Plata (present-day Argentina). This led to the 500-day-long Cisplatine War. Neither side gained the upper hand and in 1828 the Treaty of Montevideo, fostered by the United Kingdom through the diplomatic efforts of Viscount John Ponsonby, gave birth to Uruguay as an independent state.
Uruguay, officially the Oriental Republic of Uruguay, is a country in the southeastern region of South America. It borders Argentina to its west and Brazil to its north and east, with the Río de la Plata (River of Silver) to the south and with the Atlantic Ocean to the southeast.