The Brazilian Civil War, also known as the War of the Triple Alliance, occurred from 1864 to 1870. It involved Brazil, along with its allies Argentina and Uruguay, fighting against Paraguay. The conflict arose from territorial disputes and political tensions in the region, leading to one of the bloodiest wars in South America. The war resulted in significant loss of life and devastation, particularly for Paraguay, which suffered extensive casualties and economic ruin. The conflict ended with the defeat of Paraguay, altering the balance of power in South America and impacting the future relations among the involved nations.