メキシコ共和国
The first president, Miguel Barragan, died just a month into office, likely of typhus. His successor, José Justo Corro was appointed interim president by Congress, and held office just over a year, serving out the term of his late predecessor. In that time he promulgated the Seven Laws that centralized administration and concentrated power in the hands of the president rather than the now-dissolved federalist states. Also importantly Spain finally recognized the independence of its former colony. Anastasio Bustamante, who had been vice president under Vicente Guerrero, and instrumental in forcing him from office, was elected president in his own right in April 1837 for an eight-year term. He served only two years of his term, when he left office to fight federalist rebellions. Santa Anna assumed the presidency from March through July 1839, and then himself left office. Nicolás Bravo was appointed substitute president in July 1839, serving about a week, and then Bustamante resumed office. Bustamante served another two years of his eight-year term, but took a leave from office to fight the rebellion of Mariano Paredes, Gabriel Valencia, and Santa Anna, under the Plan of the Ciudadela in 1841. The rebellion succeeded and Bustamante was ousted. Santa Anna served as provisional president for a year, October 1841-October 1842, when he took leave of the office and Nicolás Bravo was appointed substitute president October 1842-March 1843. Santa Anna served again as provisional president, March through October 1843, when he left office again. Valentín Canalizo was appointed interim president, serving from October 1843 through June 1844. Santa Anna had been elected president in January 1844, and assumed office in June of that year, serving only until September. José Joaquín de Herrera served nine days as president in September 1844, quickly replaced by Valentín Canalizo, who served two and a half months as interim president. Canalizo was arrested for attempting to dissolve congress, a power granted to presidents under the Seven Laws. José Joaquín de Herrera assumed the presidency and was himself ousted by the coup by Mariano Paredes in December 1845 and appointed interim president in June 1846, with Nicolás Bravo as his vice president. Paredes left office to fight the U.S. invasion of the Mexican American War, and Nicolás Bravo became president until August 1846, when he was deposed in a coup by José Mariano Salas. Salas reinstated the federalist Constitution of 1824, becoming the last president of the Centralist Republic of Mexico and the first president of the Second Federal Republic of Mexico.