Chilean War of Independence Chilean War of Independence The Chilean War of Independence was a war between pro-independence Chilean criollos seeking political and economic independence from Spain and royalist criollos supporting continued allegiance to the Captaincy General of Chile and membership of the Spanish Empire. Traditionally, the beginning of the war is dated as September 18, 1810. Depending on what terms are used to define its end, it lasted until 1821, when royalist forces were defeated by José de San Martín; or until 1826, when the last Spanish troops surrendered and the Chiloé Archipelago was incorporated to the Chilean republic. A declaration of independence
Mexican–American War could not be released from its obligations. The US was released from all obligations of Article XI five years later by Article II of the Gadsden Purchase of 1853. The 1848 Treaty of Guadalupe Hidalgo ended the war and enforced the Mexican Cession of the northern territories of Alta California and Santa Fe de Nuevo México to the United States. Mexico acknowledged the loss of what became the State of Texas and accepted the Rio Grande as its northern border with the U.S. The losses amounted to one-third of its original territory from its 1821 independence. Before the secession of