History of the European Communities (1958–1972)

The history of the European Communities between 1958 and 1972 saw the early development of the European Communities. The European Coal and Steel Community (ECSC) had just been joined by the European Atomic Energy Community (Euratom) and the European Economic Community (EEC), the latter of which soon became the most important.

Source: Wikipedia — History of the European Communities (1958–1972) (CC BY-SA 4.0)