USA HISTORY

Detailed explanation-1: -On 27 September 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 was henceforth to be called. The Treaty of Córdoba was not ratified by the Spanish Cortes.

Detailed explanation-2: -Then, in 1821, Agustín de Iturbide, a Spanish-supporting soldier who flipped to become a leader in the Mexican independence movement, led troops into Mexico City, decisively seizing control of the city and declaring the country’s independence.

Detailed explanation-3: -Iturbide defeated the Royalist forces still opposed to independence, and the new Spanish viceroy, lacking money, provisions, and troops, was forced to accept Mexican independence. On August 24, 1821, O’Donojú signed the Treaty of Córdoba, thus ending New Spain’s dependence on Old Spain.

Detailed explanation-4: -On August 24, 1821, with the signing of the Treaty of Córdoba, Spain finally recognized the independence of the First Mexican Empire, led by none other than Iturbide himself.