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).
Yugoslavia and the European Economic Community EEC has been opened. In 1977 the EEC granted access to the European Investment Bank to Yugoslavia. By 1980 European Investment Bank granted two loans in total value of 50 million of ECUs to link the Yugoslav high-voltage electricity distribution network to the Greek and Italian grids and for the construction of part of the trans-Yugoslav road. In 1978, the European Community and the Yugoslavia began negotiations on a Cooperation Agreement, which was signed in April 1980 and entered into force in April 1983. Cooperation Agreement contained provisions concerning trade, financial aid and cooperation in the areas of industry, science