EU evolution timeline




Since the end of World War II, sovereign European countries have entered into treaties and thereby co-operated and harmonised policies (or pooled sovereignty) in an increasing number of areas, in the so-called European integration project or the construction of Europe (French: la construction europĂ©enne). The following timeline outlines the legal inception of the European Union (EU)—the principal framework for this unification. The EU inherited many of its present responsibilities from, and the membership of the European Communities (EC), which were founded in the 1950s in the spirit of the Schuman Declaration.

Legend:
  S: signing
  F: entry into force
  T: termination
  E: expiry
    de facto supersession
  Rel. w/ EC/EU framework:
   de facto inside
   outside
                  Flag of Europe.svg European Union (EU) Cont.  
Flag of Europe.svg European Communities (EC) (Pillar I)
European Atomic Energy Community (EAEC or Euratom) Cont.      
Flag of the European Coal and Steel Community 6 Star Version.svg / Flag of the European Coal and Steel Community 9 Star Version.svg / Flag of the European Coal and Steel Community 10 Star Version.svg / Flag of the European Coal and Steel Community 12 Star Version.svg European Coal and Steel Community (ECSC)  
(Distr. of competences)
    European Economic Community (EEC)    
            Schengen Rules European Community (EC)
'TREVI' Justice and Home Affairs (JHA, pillar II)  
  Flag of NATO.svg North Atlantic Treaty Organisation (NATO) Cont. Police and Judicial Co-operation in Criminal Matters (PJCC, pillar II)
Flag of France.svg Flag of the United Kingdom.svg
Anglo-French alliance
Defence arm handed to NATO European Political Co-operation (EPC)   Common Foreign and Security Policy
(CFSP, pillar III)
Flag of the Western Union.svg Western Union (WU) Flag of the Western European Union (1993-1995).svg / Flag of the Western European Union.svg Western European Union (WEU) Tasks defined following the WEU's 1984 reactivation handed to the EU
     
Social, cultural tasks handed to CoE Cont.                
    Flag of Europe.svg Council of Europe (CoE)
Dunkirk Treaty¹
S: 4 March 1947
F: 8 September 1947
E: 8 September 1997
Brussels Treaty¹
S: 17 March 1948
F: 25 August 1948
T: 30 June 2011
London and Washington treaties¹
S: 5 May/4 April 1949
F: 3 August/24 August 1949
Paris treaties: ECSC and EDC⁶
S: 18 April 1951/27 May 1952
F: 23 July 1952/—
E: 23 July 2002/—
Protocol Modifying and
Completing the Brussels Treaty¹
S: 23 October 1954
F: 6 May 1955
Rome treaties: EEC² and EAEC
S: 25 March 1957
F: 1 January 1958
WEU-CoE agreement¹
S: 21 October 1959
F: 1 January 1960
Brussels (Merger) Treaty³
S: 8 April 1965
F: 1 July 1967
Davignon report
S: 27 October 1970
European Council conclusions
S: 2 December 1975
Single European Act (SEA)
S: 17/28 February 1986
F: 1 July 1987
Schengen Treaty and Convention
S: 14 June 1985/19 June 1990
F: 26 March 1995
Maastricht Treaty², ⁴
S: 7 February 1992
F: 1 November 1993
Amsterdam Treaty
S: 2 October 1997
F: 1 May 1999
Nice Treaty
S: 26 February 2001
F: 1 February 2003
Lisbon Treaty⁵
S: 13 December 2007
F: 1 December 2009

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