Mexican Revolution (1810–1821)

Mexican Revolution (1810–1821)
Name	Mexican War of Independence
Native name	Guerra de Independencia de México
Caption	Miguel Hidalgo y Costilla leading early insurgency
Date	16 September 1810 – 27 September 1821
Place	Viceroyalty of New Spain
Result	Independence of Mexican Empire; collapse of Spanish Empire authority in New Spain
Combatant1	Spanish Empire; Royalists
Combatant2	Mexican insurgents; Criollo and Mestizo patriots
Commanders1	Félix María Calleja, Toribio Montes, Agustín de Iturbide
Commanders2	Miguel Hidalgo y Costilla, José María Morelos, Vicente Guerrero

Mexican Revolution (1810–1821) The Mexican War of Independence was a protracted insurgency and political upheaval that transformed the Viceroyalty of New Spain into the independent Mexican Empire and later the First Mexican Republic. Sparked by clerical and military conspiracies, anti-colonial agitation, and imperial crises, the conflict entwined leaders from Criollo elites to Indigenous and Mestizo insurgents, culminating in the 1821 consummation of independence under the Plan of Iguala.

Background and Causes

Late-18th- and early-19th-century New Spain was shaped by Bourbon reforms, fiscal centralization, and imperial rivalry after the Seven Years' War and the Napoleonic Wars. Reforms by José de Gálvez and José de Iturrigaray altered colonial administration and provoked tensions between Peninsular and Criollo elites, while the Bourbon Reforms restructured intendancies and Real Hacienda. The 1808 abdications at the Bayonne Abdications and the captivity of Ferdinand VII under Napoleon Bonaparte precipitated juntas across Spanish America—such as the Junta Central—and inspired conspiracies including the Conspiracy of Valladolid and plots linked to Miguel Domínguez and Josefa Ortiz de Domínguez. Economic shocks from the Continental System and local crises like the 1808 grain shortages intensified popular grievances among artisans, hacendados, and peons, while clerical figures in Querétaro and parochial leaders mobilized under influences such as the pastoral of Miguel Hidalgo y Costilla.

Course of the War (1810–1821)

The insurgency began with the Grito de Dolores proclaimed by Miguel Hidalgo y Costilla on 16 September 1810, rapidly spreading through Guanajuato and the Bajío with events like the Siege of Guanajuato and the sacking of the Alhóndiga de Granaditas. After defeats at Monte de las Cruces and Battle of Calderón Bridge, insurgents dispersed; Hidalgo was captured and executed in Chihuahua. Leadership passed to José María Morelos y Pavón, who convened the revolutionary congress at Chilpancingo and promulgated the Sentiments of the Nation and the Constitutional Decree for the Liberty of Mexico; Morelos was captured and executed in San Cristóbal Ecatepec. The conflict fragmented into guerrilla warfare with figures like Vicente Guerrero, Guadalupe Victoria, Félix María Calleja counterinsurgency campaigns, and royalist pacification in regions such as Oaxaca and Veracruz. The late-war coalition emerged when Agustín de Iturbide—a royalist commander—and insurgent leaders including Guerrero negotiated the Plan of Iguala and the Treaty of Córdoba, leading to the entry of the Army of the Three Guarantees into Mexico City and the surrender of royal authorities in 1821.

Key Figures and Factions

Key insurgent leaders included Miguel Hidalgo y Costilla, José María Morelos, Vicente Guerrero, Nicolás Bravo, José Faustino Sánchez Carrión, and Guadalupe Victoria. Royalist commanders included Félix María Calleja, Toribio Montes, and later Agustín de Iturbide, who shifted from royalist to imperialist positions. Political groupings comprised Criollo elites seeking autonomy, Peninsular officials defending metropolitan privilege, clerical actors such as Juan Nepomuceno Oviedo and parish networks in Querétaro, and regional caudillos in Puebla, Zacatecas, Michoacán, and Chiapas. Transatlantic actors—Ferdinand VII, Joseph Bonaparte, and the Cortes of Cádiz—provided the imperial context that shaped loyalties, while local institutions like town councils (cabildos) and military units such as the Regimiento Fijo mediated conflict dynamics.

Social, Economic, and Political Impacts

The war devastated agricultural regions such as the Bajío and disrupted mining centers like Guanajuato and Zacatecas, undermining revenues to the Real Hacienda and altering trade flows with Havana and Acapulco. Socially, insurgency mobilized rural bands, Indigenous communities such as the Tarascan and Nahua, and urban artisans, accelerating land disputes on haciendas and communal lands. The conflict produced political innovations, including republican proposals by Morelos and conservative monarchical designs by Iturbide; debates in Chilpancingo and later in Mexico City shaped the 1821 constitutional compromise. The war’s human cost included executions, forced migrations, and shifts in labor regimes affecting silver mining, textile manufacture in Puebla, and coastal port economies.

International and Regional Context

The insurgency unfolded amid the Peninsular War and the wider collapse of Spanish authority in the Americas, intersecting with independence movements in Venezuela, New Granada, Argentina, and Chile. British commercial interests in Cádiz and Londres monitored New Spain’s crisis, while the United States observed developments after the Louisiana Purchase and during debates in the Monroe Doctrine era. Caribbean and Pacific ports—Havana, Manila, Guayaquil—featured in mercantile networks disrupted by war. Diplomatic maneuvers like the Treaty of Córdoba negotiated between Juan O'Donojú and Agustín de Iturbide reflected transatlantic politics; the return of Ferdinand VII influenced royalist resolve and the final reconciliation that produced Mexican sovereignty.

Legacy and Independence Settlement

Independence produced the Mexican Empire under Agustín de Iturbide and later republican transformations leading to the First Mexican Republic. The Plan of Iguala enshrined the three guarantees—religion, independence, and unity—while social demands expressed in the Sentiments of the Nation anticipated later reforms by figures like Benito Juárez and Lazaro Cárdenas. The war reshaped identity among Criollo, Mestizo, and Indigenous populations and influenced subsequent conflicts such as the Texas Revolution and the Mexican–American War. Cultural memory preserves leaders through monuments, anniversaries on 16 September, and works including El Grito de Dolores (painting) and historiography by Lucas Alamán and Manuel Gutiérrez Nájera. The 1821 settlement remains a foundational rupture in the history of modern Mexico.

Category:Wars of independence of Spanish America