The Paraguayan War was the largest international armed conflict occurred in South America. It was fought between the Paraguay and Triple Alliance, composed of Brazil, Argentina and Uruguay. The war lasted from December of 1864 to March of 1870 and caused approximately 390,000 deaths. It is also called the War of the Triple Alliance (Guerra de la Triple Alianza), Argentina and Uruguay, and the Great War in Paraguay. Some older sources call the War the Lopez War, though this clearly indicates a point of view on the part of such authors.