War of the Confederation
The War of the Confederation (Spanish: Guerra de la Confederación) was a military confrontation waged by the United Restoration Army, the alliance of the land and naval forces of Chile and the Restoration Army of Peru, formed in 1836 by Peruvian soldiers opposed to the confederation, and the Argentine Confederation against the Peru–Bolivian Confederation between 1836 and 1839. As a result of the Salaverry-Santa Cruz War, the Peru–Bolivian Confederation was created by General Andrés de Santa Cruz, which caused a power struggle in southern South America, with Chile and the Argentine Confederation, as both distrusted this new and powerful political entity, seeing their geopolitical interests threatened.