<P> The position of President of Nicaragua was created in the Constitution of 1854 . From 1825 until the Constitution of 1838, the head of state of Nicaragua was styled simply as Head of State (Jefe de Estado), and from 1838 to 1854 as Supreme Director (Supremo Director). </P> <Ul> <Li> Manuel Antonio de la Cerda y Aguilar: 22 April 1825--22 April 1826 </Li> <Li> Juan Argüello del Castillo y Guzmán: 22 April 1826--14 September 1827 </Li> <Li> Pedro Benito Pineda de León (acting; in rebellion at Granada): 17 September 1826--26 February 1827 </Li> <Li> Manuel Antonio de la Cerda y Aguilar (in rebellion at León and Granada): 27 February 1827--7 November 1828 </Li> <Li> Pedro Oviedo de Chinandega (provisional): 14 September 1827--December 1827 </Li> <Li> Juan Argüello del Castillo y Guzmán: 5 August 1828--April 1829 </Li> <Li> Juan Espinosa (acting): April 1829--12 May 1830 </Li> <Li> Dionisio de Herrera: 12 May 1830--November 1833 </Li> <Li> Benito Rosales (acting): December 1833--10 March 1834 </Li> <Li> José Núñez (acting): 10 March 1834--23 April 1835 </Li> <Li> José Zepeda: 23 April 1835--25 January 1837 </Li> <Li> José Núñez (acting): 25 January 1837--12 January 1838 </Li> <Li> Francisco Jiménez Rubio (acting): 12 January 1838--13 March 1838 </Li> <Li> José Núñez: 13 March 1838--17 November 1838 </Li> </Ul> <Li> Manuel Antonio de la Cerda y Aguilar: 22 April 1825--22 April 1826 </Li> <Li> Juan Argüello del Castillo y Guzmán: 22 April 1826--14 September 1827 </Li>

Who are the presidents of nicaragua and el salvador what are their backgrounds