The Army of the Three Guarantees, commanded by Agustín de Iturbide, made a historic entrance into Mexico City, bringing with it a wave of hope and change. This army, formed by an alliance of different factions—royalists, revolutionaries, and a diverse array of colonial forces—was dedicated to establishing a new framework of governance that embraced the ideals of independence and unity. The march culminated on the bustling streets of Mexico City, where banners fluttered, firearms discharged in salute, and crowds gathered in exuberance to witness the momentous occasion.

Iturbide's strategy to secure independence from Spain began with the Plan of Iguala, which proposed three guarantees: immediate independence, equal rights for all Mexicans, and the establishment of a constitutional monarchy. The successful negotiation and collaboration among former rivals led to this victory. The event's significance was magnified by the celebrations that filled the city upon the arrival of the army, with citizens hopeful for a brighter future.

On the following day, the decree declaring Mexico's independence from Spanish rule was officially announced. This not only consolidated the various efforts of the independence movement but also brought a sense of legitimacy to the new governance under Iturbide. This key moment in history united groups that had previously been at odds, laying the groundwork for the emergence of Mexico as an independent nation with its own identity.