After a coup d'etat in spain overthrew the gogoverme, augustin de lturbide proclairmed

He proclaimed Mexico's independence and made himself the ultimate ruler, which ushered in a new era of government. 
Augustin de lturbide made his name during the mexican war of independence when he held the position as one the Generals.
Due to decisive victories that he manage to get in the revolution, his favourability as a leader was really high among the people.