ECORFAN Journal-Republic of Nicaragua, Volume 5, Number 9, December-2019, is a biannual Journal edited by ECORFAN-Republic of Nicaragua. Av. First Southwest, San Sebastián Area, León, Republic of Nicaragua. CP. 21000. http://www.ecorfan.org/republicofnicaragua/journal.phphttp://www.ecorfan.org/republicofnicaragua/journal.php, journal@ecorfan.org. Responsible editor Nery Javier Zapata Montes. ISSN: 2414-8830. Responsible for the last update of this issue ECORFAN Computer Unit. Imelda Escamilla Bouchán, PhD. Vladimir Luna Soto, PhD. Av. First Southwest, San Sebastián Area, León, Republic of Nicaragua. CP. 21000. Date of last update December 31, 2019. The opinions expressed by the authors do not necessarily reflect the position of the publisher of the publication. . It is strictly forbidden the total or partial reproduction of the contents and images of the publication without prior authorization from the Intellectual Property Registry