Mexican War of Independence recognized Mexican independence under the Plan of Iguala. On September 27, 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. Iturbide included a special clause in the treaty that left open the possibility for a criollo monarch to be appointed by a Mexican congress if no suitable member of the European royalty would accept the Mexican crown. Half of the new government employees appointed were Iturbide's followers. On
Decolonization of the Americas further wars were fought, such as the Paraguayan War and the War of the Pacific. A related process took place in what is now Mexico, Central America, and parts of North America between 1810 and 1821 with the Mexican War of Independence. Independence was achieved in 1821 by a coalition uniting under Agustín de Iturbide and the Army of the Three Guarantees. Unity was maintained for a short period under the First Mexican Empire, but within a decade the region fought against the United States over the border lands (losing bordering lands of California and Texas). Most of the heat