Congress in Tucumán Declares Argentina’s Independence

On July 9, 1816, twenty-nine deputies gathered in the northern city of San Miguel de Tucumán and signed a declaration formally severing ties with the Spanish monarchy. Rather than proclaiming the independence of Argentina as modern borders define it, the delegates announced the sovereignty of the United Provinces of South America. The resolution marked a definitive legal rupture after six years of war and political instability across the former Viceroyalty of the Río de la Plata.

The push toward independence originated in the May Revolution of 1810, which had removed Viceroy Baltasar Hidalgo de Cisneros following the French deposition of King Ferdinand VII in Europe. The revolutionary Primera Junta originally claimed to govern in the name of the captive monarch. By 1814, however, Ferdinand VII had resumed his throne, firmly rejected constitutional rule, and mounted aggressive campaigns to restore imperial control across Spanish America. In the north, royalist armies based in Peru won key victories at Huaqui, Vilcapugio, Ayohuma, and Sipe-Sipe, posing an immediate threat to the revolutionary territories.