ABSTRACT
Although the beginning of the first international agencies at the turn of the 20th century was rather spontaneous and there was limited cooperation, there were certain attempts by the first international political organizations to control and/or supervise them. The League of Nations wanted to carry out, at least indirectly, the coordination of activities and supervision of international administrative unions in economic and social areas. Not every international agency able to conclude an international agreement may become a UN specialized agency. Post-war practice confirms that some administrative unions are still participating within this system, as well as new international agencies established after the Second World War. Unlike the League of Nations, the UN created a treaty system through its Economic and Social Council within which the specific international intergovernmental agencies contribute to achieve its goals in economic and social cooperation.
