Brussels and the European Union a provisional seat, though with the Common Assembly in Strasbourg as that was the only city with a large enough hemicycle (the one used by the Council of Europe). This agreement was temporary, and plans were set to relocate the institutions to Saarbrücken which would serve as a "European District", but this did not occur. The 1957 Treaties of Rome established two new communities, the European Economic Community (EEC) and the European Atomic Energy Community (Euratom). These shared the Assembly and Court of the ECSC but created two new sets of Councils and Commissions (equivalent to the ECSC's High Authority).
Convention on the association of the Netherlands Antilles with the European Economic Community only. A "Declaration of Intent on the association of Surinam and the Netherlands Antilles with the European Economic Community", however, was attached to the Final Act of the Intergovernmental Conference for the Common Market and EURATOM: Suriname became already associated with the European Economic Community on 1 September 1962, by virtue of a Supplementary Act completing the instrument of ratification of the Kingdom of the Netherlands. This was possible, because the protocol attached to the EEC Treaty did not oblige the Kingdom of the Netherlands to only ratify on behalf of the Netherlands and Netherlands New Guinea, but rather established