The Primera Junta (English: First Junta) or Junta Provisional Gubernativa de las Provincias del Río de la Plata (Provisional Governing Junta of the Provinces of the Río de la Plata), is the most common name given to the first government of what would eventually become Argentina. It was formed on 25 May 1810, as a result of the events of the May Revolution. The Junta initially only had representatives from Buenos Aires. When it was expanded, as expected, with the addition of representatives from the other cities of the Viceroyalty of the Río de la Plata, it became popularly known instead as the Junta Grande (Grand Junta) or Junta Provisional Gubernativa de Buenos Aires. The Junta operated at El Fuerte (the fort, where the modern Casa Rosada stands), which had been used since 1776 as a resid