USA HISTORY

Detailed explanation-1: -When Mexico achieved its independence from Spain in 1821, it included most of the viceroyalty of New Spain, minus the Caribbean and the Philippines.

Detailed explanation-2: -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.

Detailed explanation-3: -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-4: -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-5: -On August 24, 1821, Spanish Viceroy Juan de O’Donojú signed the Treaty of Córdoba, which approves a plan to make Mexico an independent constitutional monarchy. In 1822, as no Bourbon monarch to rule Mexico had been found, Iturbide was proclaimed the emperor of Mexico.