The Peruvian War of Independence was a series of military conflicts beginning in 1811 that culminated in the proclamation of the independence of Peru by José de San Martín on July 28, 1821. During the previous decade Peru had been a stronghold for royalists, who fought those in favor of independence in Upper Peru, Quito and Chile. The wars of independence took place with the background of the 1780-1781 uprising by indigenous leader Túpac Amaru II and the earlier removal of Upper Peru and the Río de la Plata regions from the Viceroyalty of Peru. Because of this the viceroy often had the support of the "Lima oligarchy," who saw their elite interests threatened by popular rebellion and were opposed to the new commercial class in Buenos Aires.