Italy takes over the Presidency of the Council of the European Communities. The first European passports are issued in most Member States.
The new Commission takes office with Jacques Delors, a Frenchman, as its president.
Greenland leaves the Community but remains associated with it as overseas territory.
Gravier ruling. The European Court of Justice applies the principle of non-discrimination based on nationality to a French student who must not pay higher enrolment fees than national students in Belgium.
A European Council is held in Brussels, Belgium. It accepts the adhesion of Spain and Portugal in the Communities and agrees on the Integrated Mediterranean Programmes (IMP), as proposed by the Commission.
The eleventh Western Economic Summit is held in Bonn, Germany. The Commission presents declarations on the occasion of the 40th anniversary of the end of WWII and on sustainable growth and employment.
The European Court of Justice rules on the action for failure to act submitted by the European Parliament against the European Council on the common transport policy.
Legislative elections are held in Greece.
The Committee of Governors of the Central Banks of the Member States adopts measures designed to strengthen the European Monetary System (EMS).
Signature of the Accession Treaties of Spain and Portugal.
The Commission sends a White Paper on Completing the Internal Market to the European Council. The Schengen Agreement on the elimination of border controls is signed by Belgium, Germany, France, Luxembourg and the Netherlands in Schengen (Luxembourg).
"A People's Europe" ad hoc Committee transmits its final report to the European Council.
Presidential elections are held in Italy.
A European Council is held in Milan, Italy. The heads of state or government approve the Commission's white paper on the internal market and decide to set up an intergovernmental conference on institutional reform.
Luxembourg takes over the Presidency of the Council of the European Communities.
The ministers and governors of Central Banks of Member Sates adjust central rates within the European Monetary System (EMS).
The Council approves the convening of a conference of the representatives of the governments of the Member States to make amendments to the European Economic Community Treaty and to draft a common foreign and security policy Treaty.
The Commission sends a Green Paper on the perspectives for the common agricultural policy to the European Council.
The first meeting of the intergovernmental conference is attended by Foreign Ministers of the EU, Spain and Portugal.
Legislative elections are held in Belgium.
A cooperation agreement is signed between the European Economic Community and the General Treaty for Central American Economic Integration and Panama contracting states.
The Economic and Social Committee adopts an opinion on the completion of the internal market (Commission's "Completing the Internal Market" White Paper).
A European Council is held in Luxembourg. It agrees to amend the Treaty of Rome and to revitalise the process of European integration by drawing up a Single European Act.