Was created after World War 2 and its purpose was to remove trade barriers and improve relationships between European nations?

The organization you are referring to is the European Economic Community (EEC), established in 1957 by the Treaty of Rome. Its primary purpose was to foster economic integration among its member states by removing trade barriers and promoting a common market. This initiative aimed to enhance cooperation and improve relationships between European nations in the aftermath of World War II, ultimately laying the groundwork for the European Union.