Since World War II the legal relationships between the different countries of the international community suffered great transformations derived fundamentally of the new order of power that came from the universal conflagration that occurred between 1938 and 1945. This new organization part of the business relationships that requires the integration between the different States in order to achieve sustainable levels of development in an increasingly specialized world. This situation will lead to, in the different sub-regions of the planet, Regional Agreements of integration that will unite the efforts of States, seeking to reach a global economic capacity to allow further development arise. This trend in Latin America is not the exception despite the difficulties that arise due to the ideological breakdown of the various groups that make up the region and the interests of politicians, industry and trade unions that are in the atomization of the states, a particular way to achieve their own interests, all of which has led to the failure of attempts to achieve true regional integration.