European Commission: major institutional reforms and presidencies (1958–2024)

1. Hallstein Commission I begins first mandate

   Jan 7, 1958Labels: Walter Hallstein, EEC Commission

   • EC Former Colleges
   • Hallstein Wiki

2. Hallstein Commission holds first formal meeting

   Jan 16, 1958Labels: Val-Duchesse, EEC Commission

   • Hallstein Wiki

3. Merger Treaty signed to unify executives

   Apr 8, 1965Labels: Merger Treaty, Brussels

   • EP Merger Treaty
   • Merger Wiki

4. Merger Treaty enters into force

   Jul 1, 1967Labels: Single Commission, Single Council

   • EP Merger Treaty
   • Merger Wiki

5. Rey Commission starts as first merged Commission

   Jul 2, 1967Labels: Rey Commission, Single Commission

   • Rey Wiki
   • Jean Rey Wiki

6. Malfatti Commission takes office

   Jul 1, 1970Labels: Franco Malfatti, European Commission

   • Malfatti Wiki
   • EC Former Colleges

7. Mansholt Commission assumes presidency mid-term

   Mar 22, 1972Labels: Sicco Mansholt, European Commission

   • Mansholt Wiki
   • EC Former Colleges

8. Ortoli Commission begins after first enlargement

   Jan 6, 1973Labels: Fran ois-Xavier, First enlargement

   • Ortoli Wiki
   • EC Library Guide

9. Jenkins Commission takes office

   Jan 6, 1977Labels: Roy Jenkins, European Commission

   • Jenkins Wiki
   • Oxford Academic

10. Thorn Commission begins mandate

    Jan 6, 1981Labels: Gaston Thorn, European Commission

    • Thorn Wiki
    • EC Former Colleges

11. Delors Commission I takes office

    Jan 6, 1985Labels: Jacques Delors, Delors Commission

    • EC Former Colleges
    • Delors I FR

12. Maastricht Treaty enters into force

    Nov 1, 1993Labels: Maastricht Treaty, European Union

    • EP Maastricht
    • Britannica

13. Santer Commission begins five-year term alignment

    Jan 23, 1995Labels: Jacques Santer, European Commission

    • Santer Wiki
    • Britannica

14. Santer Commission resigns en masse

    Mar 15, 1999Labels: Santer Commission, European Parliament

    • Santer Wiki
    • CORDIS

15. Prodi Commission takes office after crisis

    Sep 16, 1999Labels: Romano Prodi, European Commission

    • Prodi Wiki
    • EC Former Colleges

16. Barroso Commission begins long two-term presidency

    Nov 22, 2004Labels: Jos Manuel, European Commission

    • Barroso Wiki
    • EC Former Colleges

17. Treaty of Lisbon enters into force

    Dec 1, 2009Labels: Lisbon Treaty, High Representative

    • Lisbon Wiki

18. Juncker Commission takes office

    Nov 1, 2014Labels: Jean-Claude Juncker, Juncker Commission

    • Juncker Wiki
    • EC Former Colleges

19. Von der Leyen Commission I assumes office

    Dec 1, 2019Labels: Ursula von, European Commission

    • EC Former Colleges
    • Von der Leyen

20. European Parliament re-elects von der Leyen

    Jul 18, 2024Labels: Ursula von, European Parliament

    • Guardian