The Mexican War of Independence

Winning Independence

Agustín de Iturbide, a military captain previously helped defeat Hidalgo's army, led a conservative group of rebels against the Spanish viceroy, achieving victory and independence on August 24, 1821, when both sides signed the Treaty of Cordoba.

Key Takeaways

Key Points

After the suppression of the Hidalgo Revolt, the war for independence entered a new phase, which for the next six years was characterized by fighting by small, isolated guerrilla bands.
In 1820, the conservative Creoles (American-born Spaniards) joined the rebellion, led by Agustín de Iturbide, a military captain who previously helped defeat Hidalgo's army.
The rebels formulated the " Plan of Iguala," demanding an independent constitutional monarchy, a religious monopoly for the Catholic Church, and equality for Spaniards and Creoles.
On September 27, 1821, Iturbide and the viceroy signed the Treaty of Cordoba whereby Spain granted the demands and withdrew.
On the night of May 18, 1822, a mass demonstration led by the Regiment of Celaya, which Iturbide had commanded during the war, marched through the streets and demanded their commander-in-chief to accept the throne; the following day, the congress declared Iturbide emperor of Mexico.

Key Terms

Plan of Iguala: A revolutionary proclamation promulgated on February 24, 1821, in the final stage of the Mexican War of Independence from Spain. The Plan stated that Mexico was to become a constitutional monarchy whose sole official religion would be Roman Catholicism. The Peninsulares and Creoles of Mexico would enjoy equal political and social rights.
Agustín de Iturbide: A Mexican army general and politician. During the Mexican War of Independence, he built a successful political and military coalition that took control in Mexico City on September 27, 1821, decisively gaining independence for Mexico. After the secession of Mexico was secured, he was proclaimed President of the Regency in 1821. A year later, he was announced as the Constitutional Emperor of Mexico, reigning briefly from May 19, 1822, to March 19, 1823. He is credited as the original designer of the first Mexican flag.

After the suppression of Hidalgo's revolt, from 1815 to 1821 most fighting for independence from Spain was by small and isolated guerrilla bands. From these, two leaders arose: Guadalupe Victoria (born José Miguel Fernández y Félix) in Puebla and Vicente Guerrero in Oaxaca, both of whom gained allegiance and respect from their followers. Believing the situation under control, the Spanish viceroy issued a general pardon to every rebel who would lay down his arms. After ten years of civil war and the death of two of its founders, by early 1820 the independence movement was stalemated and close to collapse. The rebels faced stiff Spanish military resistance and the apathy of many of the most influential criollos.

In what was supposed to be the final government campaign against the insurgents, in December 1820 Viceroy Juan Ruiz de Apodaca sent a force led by a royalist criollo Colonel Agustín de Iturbide to defeat Guerrero's army in Oaxaca. Iturbide, a native of Valladolid (now Morelia), gained renown for his zeal against Hidalgo's and Morelos's rebels during the early independence struggle. A favorite of the Mexican church hierarchy, Iturbide symbolized conservative criollo values; he was devoutly religious and committed to the defense of property rights and social privileges. He also resented his lack of promotion and failure to gain wealth.

Iturbide's assignment to the Oaxaca expedition coincided with a successful military coup in Spain against the monarchy of Ferdinand VII. The coup leaders, part of an expeditionary force assembled to suppress the independence movements in the Americas, had turned against the monarchy. They compelled the reluctant Ferdinand to reinstate the liberal Spanish Constitution of 1812 that created a constitutional monarchy. When news of the liberal charter reached Mexico, Iturbide perceived it both as a threat to the status quo and a catalyst to rouse the criollos to gain control of Mexico. The tides turned when conservative Royalist forces in the colonies chose to rise up against the liberal regime in Spain; it was a total turnaround compared to their previous opposition to the peasant insurgency. After an initial clash with Guerrero's forces, Iturbide assumed command of the royal army. At Iguala, he allied his formerly royalist force with Guerrero's radical insurgents to discuss the renewed struggle for independence.

While stationed in the town of Iguala, Iturbide proclaimed three principles, or "guarantees," for Mexican independence from Spain. Mexico would be an independent monarchy governed by King Ferdinand, another Bourbon prince, or some other conservative European prince; criollos would be given equal rights and privileges to peninsulares (those born in Spain); and the Roman Catholic Church in Mexico would retain its privileges and position as the established religion of the land. After convincing his troops to accept the principles, which were promulgated on February 24, 1821, as the Plan of Iguala, Iturbide persuaded Guerrero to join his forces in support of this conservative independence movement. A new army, the Army of the Three Guarantees, was placed under Iturbide's command to enforce the Plan of Iguala. The plan was so broadly based that it pleased both patriots and loyalists. The goal of independence and the protection of Roman Catholicism brought together all factions.

Iturbide's army was joined by rebel forces from all over Mexico. When the rebels' victory became certain, the Viceroy resigned. On August 24, 1821, representatives of the Spanish crown and Iturbide signed the Treaty of Córdoba, which recognized Mexican independence under the Plan of Iguala. On September 27, 1821, the Army of the Three Guarantees entered Mexico City, and the following day Iturbide proclaimed the independence of the Mexican Empire, as New Spain would henceforth be called.

On the night of May 18, 1822, a mass demonstration led by the Regiment of Celaya, which Iturbide had commanded during the war, marched through the streets and demanded their commander-in-chief to accept the throne. The following day, the congress declared Iturbide emperor of Mexico. On October 31, 1822, Iturbide dissolved Congress and replaced it with a sympathetic junta.

Oil painting of Agustín de Iturbide, leader of independence who was declared Emperor Augustín I, in 1822 following independe

Agustín de Iturbide: Oil painting of Agustín de Iturbide, leader of independence who was declared Emperor Augustín I, in 1822 following independence.

After Independence: The Mexican Empire

After independence, Mexican politics were chaotic. The presidency changed hands 75 times in the next 55 years (1821–76).

The Spanish attempts to reconquer Mexico comprised episodes of war between Spain and the new nation. The designation mainly covers two periods: from 1821 to 1825 in Mexico's waters, and a second period of two stages, including a Mexican plan to take the Spanish-held island of Cuba between 1826 and 1828, and the 1829 landing of Spanish General Isidro Barradas in Mexico to reconquer the territory. Although Spain never regained control of the country, it damaged the fledgling economy.

The newly independent nation was in dire straits after 11 years of the War of Independence. No plans or guidelines were established by the revolutionaries, so internal struggles for control of the government ensued. Mexico suffered a complete lack of funds to administer a country of over 4.5 million km², and faced the threats of emerging internal rebellions and of invasion by Spanish forces from their base in nearby Cuba.

Mexico now had its own government, but Iturbide quickly became a dictator. He even had himself proclaimed emperor of Mexico, copying the ceremony used by Napoleon when he proclaimed himself emperor of France. No one was allowed to speak against Iturbide. He filled his government with corrupt officials who became rich by taking bribes and making dishonest business deals.

In 1822, Mexico annexed the Federal Republic of Central America, which includes present-day Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and part of Chiapas.