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
Historiography of Colonial Spanish America disdain. An important example is Mexico's conservative politician and intellectual Lucas Alamán. His five-volume "Historia de Mejico" is the country's first history, covering the colonial era up to and including the struggle for independence. Alamán viewed crown rule during the colonial era as ideal, and political independence that after the brief monarchy of Agustín de Iturbide, the Mexican republic was characterized by liberal demagoguery and factionalism. Writing in the mid-nineteenth century, Mexican liberal Vicente Riva Palacio, grandson of insurgent hero Vicente Guerrero, wrote a five-volume history of the colonial era from a liberal viewpoint, During the era of Porfirio Díaz