The May Revolution

The May Revolution was a week-long series of events that took place from May 18 to May 25, 1810, in Buenos Aires, capital of the Viceroyalty of the Río de la Plata,The May Revolution is considered the starting point of the Argentine War of Independence, although no formal declaration of independence was issued at the time, and the Primera Junta continued to govern in the name of the deposed king Ferdinand VII. As similar events occurred in many other cities of Spanish South America when news of the dissolution of the Spanish Supreme Junta arrived, the May Revolution is also considered one of the starting points for the Spanish American wars of independence. Historians today debate whether the revolutionaries were truly loyal to the Spanish crown, or whether the declaration of fidelity to the king was a necessary ruse to conceal the true objective of achieving independence from a population that was not yet ready to accept such a radical change. A formal declaration of independence was finally issued at the Congress of Tucumán on July 9, 1816.
http://en.wikipedia.org/wiki/May_Revolution