who was the emperor of mexico who was overthrown in 1823
First Mexican Empire It existed from the signing of the Treaty of Córdoba and the declaration of Independence of the Mexican Empire in September 1821 until the emperor's abdication in March 1823 when the Provisional Government took power and the First Mexican Republic was proclaimed in 1824. The first and only monarch of the state was Agustín de Iturbide, reigning as Agustín I of Mexico,[1] for less than eight months. The empire was briefly reestablished by the French in 1863.