What was the capital of the union of provinces in the Río de la Plata comprised by most of the former dependencies from the last to be organized and also the shortest-lived of the Viceroyalties of the Spanish Empire in the Americas?
United Provinces of the Rio de la Plata The United Provinces of the Río de la Plata (Spanish: "Provincias Unidas del Río de la Plata" ), earlier known as the United Provinces of South America (Spanish: "Provincias Unidas de Sudamérica" ), a union of provinces in the Río de la Plata region of South America, emerged from the May Revolution in 1810 and the Argentine War of Independence of 1810–1818. It comprised most of the former Viceroyalty of the Río de la Plata dependencies and had Buenos Aires as its capital.
Tunja Tunja (] ) is a city on the Eastern Ranges of the Colombian Andes, in the region known as the Altiplano Cundiboyacense, 130 km northeast of Bogotá. In 2012 it had an estimated population of 181,407 inhabitants. It is the capital of Boyacá department and the Central Boyacá Province. Tunja is an important educational centre of known universities. In the time before the Spanish conquest of the Muisca, Tunja was called Hunza and was conquered by the Spanish conquistadors on August 20, 1537 upon "zaque" Quemuenchatocha and founded by the Spanish on August 6, 1539, exactly one year after the former southern capital Bacatá. The city hosts the most remaining Muisca architecture: Hunzahúa Well, Goranchacha Temple and Cojines del Zaque.