By the Rome treaties of March 25, 1957, which established the European Economic Community (EEC or common market) and the European Atomic Energy Community (Euratom), five major institutions were created to serve the Communities. Three of these organs, the Assembly, the Court of Justice, and the Economic and Social Committee, were to be the same for both Communities, under the conditions respectively laid down in the two treaties, while the other two institutions, the Council and the Commission, were to remain separate. According to the Convention which dealt with the institutions common to the Communities, the Assembly was to replace the Common Assembly of the European Coal and Steel Community (ECSC), and the Court of Justice was to replace the Court provided for in the treaty establishing ECSC. The Economic and Social Committee was to serve only EEC and Euratom since ECSC was already served by a comparable body, the Consultative Committee.