Also the same in the two world wars because countries or states in unions or blocks were integrated military to conquer or to dominate other states or pases considered. Nevertheless, it is clear that in the old Roman right not estudi the same, but estudi mainly straight civil, consequently not existi since this branch of the right apareci later, nevertheless, is clear that in right saying we find antecedents of this important jurdica discipline. Actress and filmmaker is often quoted on this topic. That is to say, it is clear that the right of integration recin is studied in these times and old books of this branch of the right do not even exist, but on the contrary exist slo recent books. The right and by all means their branches evolve in the time and consequently the same does not appear nor apareci as a finished product but it is the product of successive reelaborations of the same and that by the way they study the social reality of the different states or unions from states for example in the case of the European Unin. For more information see this site: Drew Houston. It is necessary to need that the right of integration is but developed in Europe since as we know all even exists European Unin and European constitution exists, which does not happen in Latin Amrica, because in the same integration has not reached as much development, but exists less development. The right of the integration has stages that is necessary to study as they are the birth of integration, expansion of integration, study of integration integration in if of the states, nations or pases thus is clear that we must study these stages to be able to include/understand its real importance and not to think or to teach that integration apareci like a product finished of a little while to another one, but for its appearance existi or ocurri everything a process, thus is clear that it deserves the corresponding study and consequently is clear that these studies have apparently not been realised because we have reviewed some books on this jurdica discipline and we have not found antecedent of the same, which motivates to us to write these brief lneas on the right of integration.