Abstract
Synopsis of the following thesis: Exploratory study on the effectiveness of an ergonomic system on musculoskeletal disorders caused by repetitive motions in office jobs, The North American Free Trade Agreement (NAFTA) ten years later, E-commerce and its taxation impasse in the USA.By submitting a contribution to consideration of the Editorial Board of Fórum Empresarial, the authors attest that it is an original, unpublished work, which has not been nor will be simultaneously submitted to another journal for consideration and publication; that they are responsible for the work carried out and the content of the article; and they have the corresponding copyrights.
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