What was the former name of the European Union?

In 1951 the ''European Coal & Steel Community'' was established with six founder country. In 1957, two more communities were established - the ''European Economic Communitiy'' (EEC) and ''European Atomic Energy Community'' (EURATOM). In 1967 with Merger Treaty, created a single set of institions for the three communities, which was the former name of the European Union : '' European Community ''.