European Economic Community Duchesse conference centre in 1956. Together with the Ohlin Report the Spaak Report would provide the basis for the Treaty of Rome. In 1956, Paul Henri Spaak led the Intergovernmental Conference on the Common Market and Euratom at the Val Duchesse conference centre, which prepared for the Treaty of Rome in 1957. The conference led to the signature, on 25 March 1957, of the Treaty of Rome establishing a European Economic Community. The resulting communities were the European Economic Community (EEC) and the European Atomic Energy Community (EURATOM or sometimes EAEC). These were markedly less supranational than the previous communities,
European Economic Community and succeed the European Community". The EEC was also known as the Common Market in the English-speaking countries and sometimes referred to as the European Community even before it was officially renamed as such in 1993. In 1951, the Treaty of Paris was signed, creating the European Coal and Steel Community (ECSC). This was an international community based on supranationalism and international law, designed to help the economy of Europe and prevent future war by integrating its members. In the aim of creating a federal Europe two further communities were proposed: a European Defence Community and a European Political Community.