The Intergovernmental Conference on the Common Market and Euratom was held in Brussels and started on 26 June 1956 with a session in the Grand Salon of the Belgian Foreign Ministry. The negotiations went on at the Château of Val-Duchesse in Auderghem (Brussels) and would continue until March 1957. The conference was held to draft the Treaties establishing the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or Euratom). The conference built on the results of the Spaak Report of the Spaak Committee and the decision taken at the Venice Conference to prepare the plan for the establishment of a common market and the establishment of a European Community for the peaceful use of atomic energy.
The conference was headed by Paul-Henri Spaak, Belgian Foreign Minister, the heads of the delegations from the six European Coal and Steel Community (ECSC) were Lodovico Benvenuti (Italy), Count Jean Charles Snoy et d'Oppuers (Belgium), Karl Friedrich Ophüls (Federal Republic of Germany), Maurice Faure (France), Johan Linthorst Homan (Netherlands) and Lambert Schaus (Luxembourg).
The basic principle of the common market was agreed upon by the six ECSC members, but there was wide disagreement about the procedures for its implementation. Both Germany and the three Benelux countries, with their export-oriented economies, favoured economic liberalism and wanted to reduce custom duties in order to lower the barriers for trade between the participating countries. On the other side stood France and Italy, with their less competitive economies, which were primarily in favour of a mechanism for market regulation and a certain amount of protection for external competition. France wanted some way to include its African colonial in the forthcoming European common market. The participants of the conference could not reach a satisfactory agreement on a common agricultural policy, but the outcome of the conference provided for improvement in productivity, self-sufficiency in food for the community and the establishment of an adequate income for farmers.