History of North America was declared in 1810 by Miguel Hidalgo, starting the "Mexican War of Independence". In 1813, José María Morelos and the Congress of Anáhuac signed the Solemn Act of the Declaration of Independence of Northern America, the first legal document where the separation of the New Spain with respect to Spain is proclaimed. Spain finally recognized Mexico's independence in 1821. From the time of independence of the United States, that country expanded rapidly to the west, acquiring the massive Louisiana territory in 1803. Between 1810 and 1811 a Native confederacy under Tecumseh fought unsuccessfully to keep the Americans from pushing them
Mexican War of Independence 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