Independence Day, celebrates the declaration of independence of the United Provinces of South America by the Congress of Tucumán in 1816. (Argentina)

The Independence Day of the Argentine Republic is celebrated every year on July 9. This date originates in commemoration of the signing of the Argentine Declaration of Independence, on Tuesday, July 9, 1816, in the house of Francisca Bazán de Laguna. In 1941, the building was declared a National heritage site. The decision to become independent was taken by the Congress of Tucumán, which chose the city of San Miguel de Tucumán from the United Provinces of the Río de la Plata, which proclaimed the political independence of the country from the Spanish Monarchy and also renounced all foreign domination.

The United Provinces of the Río de la Plata, earlier known as the United Provinces of South America, was a name adopted in 1816 by the Congress of Tucumán for the region of South America that declared independence in 1816, with the Sovereign Congress taking place in 1813, during the Argentine War of Independence (1810–1818) that began with the May Revolution in 1810. It originally comprised rebellious territories of the former Spanish Viceroyalty of the Río de la Plata dependencies and had Buenos Aires as its capital.

The Congress of Tucumán was the representative assembly, initially meeting in San Miguel de Tucumán, that declared the independence of the United Provinces of South America on July 9, 1816, from the Spanish Empire.

Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of 2,780,085 km² (1,073,397 sq mi), making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world. Argentina shares the bulk of the Southern Cone with Chile to the west, and is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. Argentina is a federal state subdivided into twenty-three provinces, and one autonomous city, which is the federal capital and largest city of the nation, Buenos Aires. The provinces and the capital have their own constitutions, but exist under a federal system. Argentina claims sovereignty over the Falkland Islands, South Georgia and the South Sandwich Islands, the Southern Patagonian Ice Field, and a part of Antarctica.