The present study is titled “from Historical Perspective and Investigation of the Origins of This School from the Perspective of the Classical Thinkers”, investigates the theory of integration, and explains the origins of this school from the perspective of the classical thinkers, using a descriptive-analytic method. From the beginning of the 17th century, the issue of integration was introduced in different forms to establish peace when a conflict took place in Europe. The World War I and its bad consequences negatively affected the supporters and advocates of the global peace and governance. As such, they attempted to find the causes of the regional and world wars so that they can discover the pain and prescribe a suitable medicine for that pain; the issue is the alliance and cooperation between separate political units and is of great significance. However, the findings indicated that in today’s atmosphere of the international interactions which has been accompanied by theorization development, cooperation and integration are an unavoidable international necessity.