<Li> Political influence: Smaller countries, such as Portugal and Belgium, who do not carry much political clout on the international stage, are given a substantial increase in influence through membership in IGOs, such as the European Union . Also for countries with more influence such as France and Germany they are beneficial as the nation increases influence in the smaller countries' internal affairs and expanding other nations dependence on themselves, so to preserve allegiance </Li> <Li> Security: Membership in an IGO such as NATO gives security benefits to member countries . This provides an arena where political differences can be resolved . </Li> <Li> Improve democracy and the likelihood of democratic survival: It has been noted that member countries experience a greater degree of democracy and those democracies survive longer . </Li> <P> Reasons for rejecting membership: </P>

Which organization is the best known international intergovernmental organization of igo