Mexican War of Independence the expedition of Isidro Barradas in 1829, Spain under the rule of Isabella II recognized the independence of Mexico in 1836. Mexican resistance and struggle for independence began with the brutal Spanish conquest of the Aztec Empire when Spanish conquerors had considerable autonomy from crown control. Don Martín Cortés (son of Hernán Cortés), the second marquis of the Valley of Oaxaca, led a conspiracy of holders of encomiendas against the Spanish crown after it sought to eliminate privileges for the conquistadors, particularly putting limitations on encomiendas. After the suppression of that mid-16th-century conspiracy, elites raised no substantial challenge to royal
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