Mexican War of Independence arm of the conspirators and in early 1821 he met Vicente Guerrero. Both proclaimed the Plan of Iguala, which called for the union of all insurgent factions and was supported by both the aristocracy and clergy of New Spain. It called for monarchy in an independent Mexico. Finally, the independence of Mexico was achieved on September 27, 1821. After that, the mainland of New Spain was organized as the Mexican Empire. This ephemeral Catholic monarchy changed to a federal republic in 1823, due to internal conflicts and the separation of Central America from Mexico. After some Spanish reconquest attempts, including
Solemn Act of the Declaration of Independence of Northern America Solemn Act of the Declaration of Independence of Northern America The Solemn Act of Northern America's Declaration of Independence () is the first Mexican legal historical document which established the separation of Mexico from Spanish rule. It was signed on November 6, 1813, by the deputies of the Congress of Anáhuac, organized by General José María Morelos in the city of Oaxaca in June of that same year, and later installed in the city of Chilpancingo on September 13. The document gathers some of the main political uprisings contained in "Feelings of the Nation" ("Sentimientos de la Nación"), a document