Mexican War of Independence (1810–1821)

Mexican War of Independence (1810–1821)
Name	Mexican War of Independence
Native name	Guerra de Independencia de México
Date	1810–1821
Place	New Spain, Mexico City, Gulf of Mexico, Pacific Coast
Result	Independence of Mexico; establishment of the First Mexican Empire
Combatants	Spanish Empire vs. insurgent forces including Vicente Guerrero, José María Morelos, Miguel Hidalgo y Costilla, Agustín de Iturbide
Commanders	Ferdinand VII of Spain, Viceroy José de Iturrigaray, Viceroy Félix María Calleja, Antonio López de Santa Anna

Mexican War of Independence (1810–1821) The Mexican War of Independence was a protracted armed conflict that led to the end of Spanish rule in New Spain and the creation of an independent First Mexican Empire. The struggle involved a complex coalition of criollo elites, mestizo leaders, indigenous communities, clerical figures, and military officers across regions such as Veracruz, Puebla, Guerrero, and Nuevo León. The conflict intersected with contemporaneous events including the Peninsular War, the abdication of Ferdinand VII of Spain, and liberal reforms like the Spanish Constitution of 1812.

Background and Causes

Long-term causes combined colonial structures centered in Mexico City, mercantile ties to the Spanish Empire, and social stratification among criollo, peninsular elites, mestizo, and indigenous populations. The Bourbon reforms of the late 18th century and fiscal demands from the Bourbon dynasty aggravated tensions between the Viceroyalty of New Spain, regional elites in Puebla and Guadalajara, and mercantile interests in Veracruz. The Napoleonic invasion of Spain, the capture of Ferdinand VII of Spain by Napoleon Bonaparte, and the emergence of juntas in Seville and Cádiz created a political crisis that encouraged conspiracies among figures such as Miguel Hidalgo y Costilla, Ignacio Allende, and Juan Aldama in the capital and provincial centers.

Outbreak of Rebellion (1810–1811)

On 16 September 1810, the parish priest Miguel Hidalgo y Costilla issued what became known as the Grito that mobilized insurgent forces from Dolores Hidalgo toward Mexico City. Early engagements included the seizure of Guanajuato, the assault on the Alhóndiga de Granaditas, and battles near Celaya and Aculco. Leadership evolved as military commanders like Ignacio Allende and political strategists such as José María Morelos rose to prominence; the insurgency attracted followers across regions including Zacatecas and San Miguel el Grande (now San Miguel de Allende). Royalist counteroffensives under Viceroys such as Francisco Javier Venegas and Félix María Calleja culminated in defeats for Hidalgo at Battle of Calderón Bridge and the capture and execution of insurgent leaders, accelerating the shift to new insurgent centers.

Guerrilla Warfare and Political Fragmentation (1811–1815)

After the executions of Miguel Hidalgo y Costilla and Ignacio Allende, the insurgency decentralized under commanders like José María Morelos, Vicente Guerrero, Mariano Matamoros, and Herménegildo Galeana. Morelos led campaigns from Chilpancingo and convened the Congress of Anáhuac which drafted the Sentimientos de la Nación and the Constitutional Decree for the Liberty of Mexico, advancing plans for a republican order. Royalist forces led by Félix María Calleja and naval actions from Havana and Manila challenged insurgent logistics. Regional guerrilla warfare in Guerrero and Oaxaca prolonged fighting, while political fragmentation produced rivalries among military caudillos and divergent programs from communities in Puebla and Yucatán.

Resurgence and Consolidation (1815–1820)

The capture and execution of José María Morelos at San Cristóbal Ecatepec intensified guerrilla resistance under figures like Vicente Guerrero, Francisco Xavier Mina, and Guadalupe Victoria. Simultaneously, royalist exhaustion, Spanish political instability following the restoration of Ferdinand VII of Spain and repression of the Spanish Constitution of 1812, and economic strain weakened metropolitan control. Regional strongholds such as Toluca and Toluca de Lerdo saw shifting allegiances, while insurgent diplomacy sought recognition from foreign actors including envoys linked to Great Britain and contacts in New Orleans. Military innovations and local supplies enabled insurgents to survive through hit-and-run tactics, preserving momentum into the 1820s.

Plan of Iguala and Final Campaign (1820–1821)

The liberal revolution of Rafael del Riego in Spain and the success of the restored Spanish Constitution of 1812 alarmed criollo elites and military officers like Agustín de Iturbide, who negotiated with insurgent leaders including Vicente Guerrero to produce the Plan of Iguala in February 1821. The Plan proclaimed three guarantees: union of all classes, Catholicism as the state religion, and independence, which attracted defecting royalist forces organized into the Army of the Three Guarantees under Agustín de Iturbide and Vicente Guerrero. The final campaign culminated in events such as the Treaty of Córdoba, the peaceful entry into Mexico City, and the proclamation of independence with Acapulco and Veracruz turning to the insurgent cause.

Aftermath and Legacy

Independence ended formal Spanish rule and led to the establishment of the First Mexican Empire under Agustín de Iturbide, followed by political turmoil that produced the Mexican Republic and later conflicts including the Pastry War and the Mexican–American War. The war's social legacy influenced land disputes, clerical-state relations involving the Catholic Church, and the status of indigenous peoples and Afro-Mexicans. Cultural memory preserved the roles of protagonists such as Miguel Hidalgo y Costilla, José María Morelos, Vicente Guerrero, Agustín de Iturbide, and regional actors in patriotic commemorations like Día de la Independencia. Historiography remains contested, with studies focusing on figures including Lucas Alamán, Vicente Riva Palacio, and modern scholars assessing continuities with the Mexican Revolution and 19th-century state formation.

Category:Wars of independence