Agustin de Iturbide was a Mexican revolutionary leader and a self- proclaimed emperor over a kingdom of which Nicaragua was briefly a part. He began his career as an officer in the Spanish royalist army in what is now known as Mexico, during the time of the Mexican war of independence. Iturbide was given command of the royalist troops who were assigned to crush an uprising by the Mexican revolutionist Vicente Guerrero. However, instead of following his orders, he joined forces with Guerrero against the Spanish. In February of 1821, they issued the Plan of Iguala, which called for Mexico to have its own independent monarchical government. Iturbide and Guerrero became broadly popular, and they managed to repeatedly defeat the royalists near Mexico City. The Spanish viceroy resigned and signed the Treaty of Cordoba in August of 1821 which proclaimed Mexico's independence. A month later, Iturbide was the provisional head of the government.
Iturbide decided to make himself the emperor Agustin I in 1822. Nicaragua became part of his empire, but he soon proved to be a wasteful and incompetent leader, and was forced into exile by Antonio Lopez ten months after the conception of his reign. He returned to Mexico in 1824, was arrested by the Mexican congress, who executed as a traitor.