The War of the Confederation (Spanish: Guerra de la Confederación) was a military confrontation waged by Chile, along with Peruvian dissidents, and the Argentine Confederation against the Peru–Bolivian Confederation between 1836 and 1839. As a result of the Salaverry-Santa Cruz War, the Peru-Bolivia 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. After some incidents, Chile and the Argentine Confederation declared war on the Peru-Bolivian Confederation, although both waged war separately.