History of the European Union

The European Union is a geo-political entity covering a large portion of the European continent. It is founded upon numerous treaties and has undergone expansions and secessions that have taken it from 6 member states to 27, a majority of the states in Europe.

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Apart from the ideas of federation, confederation, or customs union such as Winston Churchill's 1946 call for a "United States of Europe", the original development of the European Union was based on a supranational foundation that would "make war unthinkable and materially impossible"[1][2] and reinforce democracy amongst its members[3] as laid out by Robert Schuman and other leaders in the Schuman Declaration (1950) and the Europe Declaration (1951). This principle was at the heart of the European Coal and Steel Community (ECSC) (1951), the Treaty of Paris (1951), and later the Treaty of Rome (1958) which established the European Economic Community (EEC) and the European Atomic Energy Community (EAEC). The ECSC expired in 2002, while the EAEC maintains a distinct legal identity despite sharing members and institutions.

The Maastricht Treaty (1992) created the European Union with its pillars system, including foreign and home affairs alongside the European Community. This in turn led to the creation of the single European currency, the euro (launched 1999). The Maastricht Treaty has been amended by the treaties of Amsterdam (1997), Nice (2001) and Lisbon (2007).

Ideas of European unity before 1945
Main article: Ideas of European unity before 1945
Europa regina in Sebastian Münster's "Cosmographia", 1570.

The original development of the European Union was based on a supranational foundation that would "make war unthinkable and materially impossible"[1][2] A peaceful means of some consolidation of European territories used to be provided by dynastic unions; less common were country-level unions, such as the Polish–Lithuanian Commonwealth and Austro-Hungarian Empire.[4]

In the Congress of Aix-la-Chapelle of 1818, Tsar Alexander, as the most advanced internationalist of the day, suggested a kind of permanent European union and even proposed the maintenance of international military forces to provide recognised states with support against changes by violence.[5]

An example of an organisation formed to promote the association of states between the wars to promote the idea of European union is the Pan-Europa movement.

1945–1957: From ECSC to the Treaties of Rome
After two devastating world wars, the political climate favoured an international unity that could preserve peace in Europe effectively. (Hamburg, after a massive Allied bombing in 1943 in the picture)

World War II from 1939 to 1945 saw a human and economic catastrophe that hit Europe hardest. It demonstrated the horrors of war, and also of extremism, through the Holocaust and the atomic bombings of Hiroshima and Nagasaki. Once again, there was a desire to ensure it could never happen again, particularly with the war giving the world nuclear weapons. Most European countries failed to maintain their Great Power status, with the exception of the USSR, which became a superpower after World War II and maintained the status for 45 years. This left two rival ideologically opposed superpowers.[6]

To ensure Germany could never threaten the peace again, its heavy industry was partly dismantled (See: Allied plans for German industry after World War II) and its main coal-producing regions were detached (Saarland, Silesia), or put under international control (Ruhr area).[7] (See: Monnet Plan)

With statements such as Winston Churchill's 1946 call for a "United States of Europe" becoming louder, the Council of Europe was established in 1949 as the first pan-European organisation. In the year following, on 9 May 1950, the French Foreign Minister Robert Schuman proposed a community to integrate the coal and steel industries of Europe – these being the two elements necessary to make weapons of war. (See: Schuman declaration).

Robert Schuman proposed the Coal and Steel Community in May 1950.

On the basis of that speech, France, Italy, the Benelux countries (Belgium, Netherlands and Luxembourg) together with West Germany signed the Treaty of Paris (1951) creating the European Coal and Steel Community the following year; this took over the role of the International Authority for the Ruhr[8] and lifted some restrictions on German industrial productivity. It gave birth to the first institutions, such as the High Authority (now the European Commission) and the Common Assembly (now the European Parliament). The first presidents of those institutions were Jean Monnet and Paul-Henri Spaak respectively.

The formation of the European Coal and Steel Community was advanced by American Secretary of State George C. Marshall. His namesake plan to rebuild Europe in the wake of World War II contributed more than $100 billion in today's dollars to the Europeans, helping to feed Europeans, deliver steel to rebuild industries, provide coal to warm homes, and construct dams to help provide power. In doing so, the Marshall Plan encouraged the integration of European powers into the European Coal and Steel Community, the precursor to present-day European Union, by illustrating the effects of economic integration and the need for coordination. The potency of the Marshall's plan caused German Chancellor Helmut Schmidt to remark that "[the] United States ought not to forget that the emerging European Union is one of its greatest achievements: it would never have happened without the Marshall Plan."[9]

The attempt to turn the Saar protectorate into a "European territory" was rejected by a referendum in 1955. The Saar was to have been governed by a statute supervised by a European Commissioner reporting to the Council of Ministers of the Western European Union.

After failed attempts at creating defence (European Defence Community) and political communities (European Political Community), leaders met at the Messina Conference and established the Spaak Committee which produced the Spaak report. The report was accepted at the Venice Conference (29 and 30 May 1956) where the decision was taken to organise an Intergovernmental Conference. The Intergovernmental Conference on the Common Market and Euratom focused on economic unity, leading to the Treaties of Rome being signed in 1957 which established the European Economic Community (EEC) and the European Atomic Energy Community (Euratom) among the members.[10]

1958–1972: Three communities
Konrad Adenauer, Walter Hallstein and Antonio Segni, signing the European customs union and Euratom in Rome in 1957

The two new communities were created separately from ECSC, although they shared the same courts and the Common Assembly. The executives of the new communities were called Commissions, as opposed to the "High Authority". The EEC was headed by Walter Hallstein (Hallstein Commission) and Euratom was headed by Louis Armand (Armand Commission) and then Etienne Hirsch. Euratom would integrate sectors in nuclear energy while the EEC would develop a customs union between members.[10][11][12]

Throughout the 1960s tensions began to show with France seeking to limit supranational power and rejecting the membership of the United Kingdom. However, in 1965 an agreement was reached to merge the three communities under a single set of institutions, and hence the Merger Treaty was signed in Brussels and came into force on 1 July 1967 creating the European Communities.[13] Jean Rey presided over the first merged Commission (Rey Commission).

While the political progress of the Communities was hesitant in the 1960s, this was a fertile period for European legal integration.[14] Many of the foundational legal doctrines of the Court of Justice were first established in landmark decisions during the 1960s and 1970s, above all in the Van Gend en Loos decision of 1963 that declared the "direct effect" of European law, that is to say, its enforceability before national courts by private parties.[15] Other landmark decisions during this period included Costa v ENEL, which established the supremacy of European law over national law[16] and the "Dairy Products" decision, which declared that general international law principles of reciprocity and retaliation were prohibited within the European Community.[17] All three of these judgments were made after the appointment of French judge Robert Lecourt in 1962, and Lecourt appears to have become a dominant influence on the Court of Justice over the 1960s and 1970s.[18]

1973–1993: Enlargement to Delors
De Gaulle's veto delayed the first enlargement.

After much negotiation, and following a change in the French Presidency, Denmark, Ireland and the United Kingdom (with Gibraltar) eventually joined the European Communities on 1 January 1973. This was the first of several enlargements which became a major policy area of the Union (see: Enlargement of the European Union).[19]

In 1979, the European Parliament held its first direct elections by universal suffrage. 410 members were elected, who then elected the first female President of the European Parliament, Simone Veil.[20]

A further enlargement took place in 1981 with Greece joining on 1 January, six years after applying. In 1982, Greenland voted to leave the Community after gaining home rule from Denmark (See also: Special member state territories and the European Union). Spain and Portugal joined (having applied in 1977) on 1 January 1986 in the third enlargement.[21]

The Iron Curtain's fall enabled the accession of the DDR (Berlin Wall).

Recently appointed Commission President Jacques Delors (Delors Commission) presided over the adoption of the European flag by the Communities in 1986. In the first major revision of the treaties since the Merger Treaty, leaders signed the Single European Act in February 1986. The text dealt with institutional reform, including extension of community powers – in particular in regarding foreign policy. It was a major component in completing the single market and came into force on 1 July 1987.[22]

Otto von Habsburg, who played a leading role in the collapse of the Iron Curtain and communism.

In 1987 Turkey formally applied to join the Community and began the longest application process for any country. After the 1988 Polish strikes and the Polish Round Table Agreement, the first small signs of opening in Central Europe appeared. The opening of a border gate between Austria and Hungary at the Pan-European Picnic on August 19, 1989 then set in motion a peaceful chain reaction, at the end of which there was no longer a GDR and the Eastern Bloc had disintegrated. Otto von Habsburg and Imre Pozsgay saw the event as an opportunity to test Mikhail Gorbachev`s reaction to an opening of the Iron Curtain.[23] In particular, it was examined whether Moscow would give the Soviet troops stationed in Hungary the command to intervene.[24] But with the mass exodus at the Pan-European Picnic, the subsequent hesitant behavior of the Socialist Unity Party of East Germany and the non-intervention of the Soviet Union broke the dams. So the bracket of the Eastern Bloc was broken and as a result the Berlin Wall fell together with the whole Iron Curtain.[25][26] Germany reunified and the door to enlargement to the former Eastern Bloc was opened (See also: Copenhagen Criteria).[27][28]

With a wave of new enlargements on the way, the Maastricht Treaty was signed on 7 February 1992 which established the European Union when it came into force the following year.

1993–2004: Creation
Main article: History of the European Union (1993–2004)
Interactive SVG map of the evolution of the European Union

On 1 November 1993, under the third Delors Commission, the Maastricht Treaty became effective, creating the European Union with its pillar system, including foreign and home affairs alongside the European Community.[29][30] The 1994 European elections were held resulting in the Socialist group maintaining their position as the largest party in Parliament. The Council proposed Jacques Santer as Commission President but he was seen as a second choice candidate, undermining his position. Parliament narrowly approved Santer but his commission gained greater support, being approved by 416 votes to 103. Santer had to use his new powers under Maastricht to flex greater control over his choice of Commissioners. They took office on 23 January 1995.[31]

On 30 March 1994, accession negotiations concluded with Austria, Sweden and Finland. Meanwhile, Norway, Iceland and Liechtenstein joined the European Economic Area (which entered into force on 1 January 1994), an organisation that allowed European Free Trade Association states to enter the Single European Market. The following year, the Schengen Agreement came into force between seven members, expanding to include nearly all others by the end of 1996. The 1990s also saw the further development of the euro. 1 January 1994 saw the second stage of the Economic and Monetary Union of the European Union begin with the establishment of the European Monetary Institute and at the start of 1999 the euro as a currency was launched and the European Central Bank was established. On 1 January 2002, notes and coins were put into circulation, replacing the old currencies entirely.

Coins and banknotes of the Euro, the single-currency introduced from 1999

During the 1990s, the conflicts in the Balkans gave impetus to developing the EU's Common Foreign and Security Policy (CFSP). The EU failed to react during the beginning of the conflict, and UN peacekeepers from the Netherlands failed to prevent the Srebrenica massacre (July 1995) in Bosnia and Herzegovina, the largest mass murder in Europe since the Second World War. The North Atlantic Treaty Organization (NATO) finally had to intervene in the war, forcing the combatants to the negotiation table. The early foreign policy experience of the EU led to foreign policy being emphasised in the Treaty of Amsterdam (which created the High Representative).[32]

However, any success was overshadowed by the budget crisis in March 1999. The Parliament refused to approve the Commission's 1996 community's budget on grounds of financial mismanagement, fraud and nepotism. With Parliament ready to throw them out, the entire Santer Commission resigned.[33][34] The post-Delors mood of euroscepticism became entrenched with the Council and Parliament constantly challenging the Commission's position in coming years.[35]

In the following elections, the Socialists lost their decades-old majority to the new People's Party and the incoming Prodi Commission was quick to establish the new European Anti-fraud Office (OLAF).[36] Under the new powers of the Amsterdam Treaty, Prodi was described by some as the 'First Prime Minister of Europe'.[37] On 4 June, Javier Solana was appointed Secretary General of the Council and the strengthened High Representative for the Common Foreign and Security Policy admitted the intervention in Kosovo – Solana was also seen by some as Europe's first Foreign Minister.[38] The Nice Treaty was signed on 26 February 2001 and entered into force on 1 February 2003 which made the final preparations before the 2004 enlargement to 10 new members.

2004–present
Main article: History of the European Union since 2004
See also: Treaty of Lisbon, European debt crisis, European migrant crisis, and Brexit
Ex-President Barroso.

On 10–13 June 2004, the 25 member states participated in the largest trans-national election in history (with the second largest democratic electorate in the world). The result of the sixth Parliamentary election was a second victory for the European People's Party-European Democrats group. It also saw the lowest voter turnout of 45.5%, the second time it had fallen below 50%.[39] On 22 July 2004, José Manuel Barroso was approved by the new Parliament as the next Commission President. However, his new team of 25 Commissioners faced a tougher road. With Parliament raising objections to a number of his candidates he was forced to withdraw his selection and try once more. The Prodi Commission had to extend their mandate to 22 November after the new line-up of commissioners was finally approved.[40]

A proposed constitutional treaty was signed by plenipotentiaries from EU member states on 28 October 2004. The document was ratified in most member states, including two positive referendums. The referendums that were held in France and the Netherlands failed however, killing off the treaty. The European Council agreed that the constitution proposal would be abandoned, but most of its changes would be retained in an amending treaty. On 13 December 2007 the treaty was signed, containing opt-outs for the more eurosceptic members and no state-like elements. The Lisbon treaty finally came into force on 1 December 2009. It created the post of President of the European Council and significantly expanded the post of High Representative. After much debate about what kind of person should be President, the European Council agreed on a low-key personality and chose Herman Van Rompuy while foreign policy-novice Catherine Ashton became High Representative.

Newest state in yellow.

The 2009 elections again saw a victory for the European People's Party, despite losing the British Conservatives who formed a smaller eurosceptic grouping with other anti-federalist right wing parties. Parliament's presidency was once again divided between the People's Party and the Socialists, with Jerzy Buzek elected as the first President of the European Parliament from an ex-communist country. Barroso was nominated by the Council for a second term and received backing from EPP who had declared him as their candidate before the elections. However, the Socialists and Greens led the opposition against him despite not agreeing on an opposing candidate. Parliament finally approved Barroso II, though once more several months behind schedule.

In 2007, the fifth enlargement completed with the accession of Romania and Bulgaria on 1 January 2007. Also, in 2007 Slovenia adopted the euro,[41] Malta and Cyprus in 2008[42] and Slovakia in 2009. However trouble developed with existing members as the eurozone entered its first recession in 2008.[43] Members cooperated and the ECB intervened to help restore economic growth and the euro was seen as a safe haven, particularly by those outside such as Iceland.[44][45][46]

However, with the risk of a default in Greece, Ireland, Portugal and other members in late 2009–10, eurozone leaders agreed to provisions for loans to member states who could not raise funds. Accusations that this was a U-turn on the EU treaties, which rule out any bail out of a euro member in order to encourage them to manage their finances better, were countered by the argument that these were loans, not grants, and that neither the EU nor other Member States assumed any liabilities for the debts of the aided countries. With Greece struggling to restore its finances, other member states also at risk and the repercussions this would have on the rest of the eurozone economy, a loan mechanism was agreed. The crisis also spurred consensus for further economic integration and a range of proposals such as a European Monetary Fund or federal treasury.[47][48][49]

The European Union received the 2012 Nobel Peace Prize for having "contributed to the advancement of peace and reconciliation, democracy and human rights in Europe."[50][51] The Nobel Committee stated that "that dreadful suffering in World War II demonstrated the need for a new Europe [...] today war between Germany and France is unthinkable. This shows how, through well-aimed efforts and by building up mutual confidence, historical enemies can become close partners."[52] The Nobel Committee's decision was subject to considerable criticism.[53]

On 1 July 2013, Croatia joined the EU, and on 1 January 2014 the French Indian Ocean territory of Mayotte was added as an outermost region.[54]

On 23 June 2016, the citizens of the United Kingdom voted to withdraw from the European Union in a referendum and subsequently became the first and to date only member to trigger Article 50 of the Treaty on European Union (TEU). The vote was in favour of leaving the EU by a margin of 51.9% in favour to 48.1% against.[55] The UK's withdrawal was completed on 31 January 2020.

gollark: NMFS, No More File Systems.
gollark: Why did you fail? This is illegal.
gollark: Anyway Ale, please fix the bug and ping me about it tomorrow. Or ping me if you fail.
gollark: PotatOS is very crashable.
gollark: NUFS, for New Unixy Filesystem.

See also
Wider European history between World War II and the fall of Communism in Europe 1945–1992
Wider European history after the creation of the European Union

References
  1. "Schuman Project". schuman.info.
  2. "Schuman Project". schuman.info.
  3. "Schuman Project". schuman.info.
  4. "The World Factbook". cia.gov.
  5. R. R. Palmer. A History of the Modern World. p. 461.
  6. Europe in ruins in the aftermath of the Second World War ena.lu
  8. "Problem while searching in History". digicoll.library.wisc.edu. Retrieved 28 July 2016.
  9. "Europe: How The Marshall Plan Took Western Europe From Ruins To Union". RadioFreeEurope/RadioLiberty. Retrieved 20 June 2019.
  10. A peaceful Europe – the beginnings of cooperation europa.eu
  11. A European Atomic Energy Community ena.lu
  12. A European Customs Union ena.lu
  13. Merging the executives ena.lu
  14. Lecourt, Robert (1976). L'Europe des juges. Bruxelles, Bruylant. Stein, Eric (1981). 'Lawyers, Judges, and the Making of a Transnational Constitution.' American Journal of International Law 75(1): 1–27. Weiler, Joseph H. H. (1991). 'The Transformation of Europe.' Yale Law Journal 100: 2403–2483.
  15. ECJ Case 26/62
  16. ECJ Case 6/64
  17. ECJ Cases 90&91/63, Commission v Luxembourg & Belgium. See e.g. Phelan, William (2016). 'Supremacy, Direct Effect, and Dairy Products in the Early History of European law.' International Journal of Constitutional Law 14: 6–25.
  18. W. Phelan, Great Judgments of the European Court of Justice: Rethinking the Landmark Decisions of the Foundational Period (Cambridge, 2019)
  19. The first enlargement cvce.eu
  20. The new European Parliament cvce.eu
  21. Negotiations for enlargement cvce.eu
  22. Single European Act cvce.eu
  23. Miklós Németh in Interview, Austrian TV - ORF "Report", 25 June 2019
  24. „Der 19. August 1989 war ein Test für Gorbatschows“ (German - August 19, 1989 was a test for Gorbachev), in: FAZ 19 August 2009.
  25. Michael Frank: Paneuropäisches Picknick – Mit dem Picknickkorb in die Freiheit (German: Pan-European picnic - With the picnic basket to freedom), in: Süddeutsche Zeitung 17 May 2010.
  26. Ludwig Greven "Und dann ging das Tor auf", in Die Zeit, 19 August 2014.
  27. The fall of the Berlin Wall ena.lu
  28. Andreas Rödder, Deutschland einig Vaterland – Die Geschichte der Wiedervereinigung (2009).
  29. 1993 europa.eu
  30. Characteristics of the Treaty on European Union cvce.eu
  31. "The crisis of the Santer Commission". Centre Virtuel de la Connaissance sur l'Europe (CVCE). Retrieved 29 January 2013.
  32. The Treaty of Amsterdam ena.lu
  33. Ringer, Nils F. (February 2003). "The Santer Commission Resignation Crisis" (PDF). University of Pittsburgh. Retrieved 7 October 2007.
  34. Hoskyns, Catherine; Michael Newman (2000). Democratizing the European Union: Issues for the twenty-first Century (Perspectives on Democratization). Manchester University Press. pp. 106–7. ISBN 978-0-7190-5666-6.
  35. Topan, Angelina (30 September 2002). "The resignation of the Santer-Commission: the impact of 'trust' and 'reputation'". European Integration online Papers. Retrieved 7 October 2007.
  36. "EU Budget Fraud". politics.co.uk. Archived from the original on 19 June 2006. Retrieved 7 October 2007.
  37. Prodi to Have Wide, New Powers as Head of the European Commission iht.com 16 April 1999
  38. Javier Solana/Spain: Europe's First Foreign Minister? businessweek.com
  39. Vote EU 2004 news.bbc.co.uk
  40. The new commission – some initial thoughts Archived 23 September 2006 at the Wayback Machine bmbrussels.b
  41. "Slovenia clear to adopt the euro". British Broadcasting Corporation. 16 June 2006. Retrieved 18 January 2009.
  42. "Cyprus and Malta set to join Eurozone in 2008". euractiv.com. 16 May 2007. Archived from the original on 18 October 2007. Retrieved 19 January 2009.
  43. EU data confirms eurozone's first recession Archived 30 December 2010 at the Wayback Machine, EUbusiness.com, 8 January 2009
  44. "European leaders agree crisis rescue at summit". Eubusiness.com. Archived from the original on 13 October 2008. Retrieved 2 January 2009.
  45. Oakley, David and Ralph Atkins (17 September 2009) Eurozone shows its strength in a crisis, Financial Times
  46. Iceland to be fast-tracked into the EU, the Guardian
  47. Willis, Andrew (25 March 2010) Eurozone leaders agree on Franco-German bail-out mechanism, EU Observer
  48. Eurozone overhaul Die Zeit on Presseurop, 12 February 2010
  49. Plans emerge for 'European Monetary Fund' EU Observer
  50. The Nobel Peace Prize 2012, Nobelprize.org, 12 October 2012, retrieved 12 October 2012
  51. "Nobel Committee Awards Peace Prize to E.U.", New York Times, 12 October 2012, retrieved 12 October 2012
  52. The Nobel Peace Prize for 2012, Nobelprize.org, 12 October 2012, retrieved 12 October 2012
  53. Gaspers, Jan (December 2012). "The European Union and the Nobel Peace Prize: A Criteria-Based Assessment" (PDF). Retrieved 19 December 2012.
  54. "EUROPEAN COUNCIL DECISION of 11 July 2012 amending the status of Mayotte with regard to the European Union". europa.eu.
  55. "Labour leadership & Hammond in China – BBC News". Retrieved 23 July 2016.

Further reading
  • Anderson, P. The New Old World (Verso 2009) ISBN 978-1-84467-312-4
  • Berend, Ivan T. The History of European Integration: A New Perspective. (Routledge, 2016).
  • Blair, Alasdair. The European Union since 1945 (Routledge, 2014).
  • Chaban, N. and M. Holland, eds. Communicating Europe in Times of Crisis: External Perceptions of the European Union (2014).
  • Dedman, Martin. The origins and development of the European Union 1945-1995: a history of European integration (Routledge, 2006).
  • De Vries, Catherine E. "Don't Mention the War! Second World War Remembrance and Support for European Cooperation." JCMS: Journal of Common Market Studies (2019).
  • Dinan, Desmond. Europe recast: a history of European Union (2nd ed. Palgrave Macmillan), 2004 excerpt.
  • Fimister, Alan. Robert Schuman: Neo-Scholastic Humanism and the Reunification of Europe (2008)
  • Heuser, Beatrice. Brexit in History: Sovereignty or a European Union? (2019) excerpt also see online review
  • Hobolt, Sara B. "The Brexit vote: a divided nation, a divided continent." Journal of European Public Policy (2016): 1–19.
  • Jorgensen, Knud Erik, et al., eds. The SAGE Handbook of European Foreign Policy (Sage, 2015).
  • Kaiser, Wolfram. "From state to society? The historiography of European integration." in Michelle Cini, and Angela K. Bourne, eds. Palgrave Advances in European Union Studies (Palgrave Macmillan UK, 2006). pp 190–208.
  • Kaiser, Wolfram, and Antonio Varsori, eds. European Union history: themes and debates (Springer, 2016).
  • Koops, TJ. and G. Macaj. The European Union as a Diplomatic Actor (2015).
  • McCormick, John. Understanding the European Union: a concise introduction (Palgrave Macmillan, 2014).
  • May, Alex. Britain and Europe since 1945 (1999).
  • Marsh, Steve, and Hans Mackenstein. The International Relations of the EU (Routledge, 2014).
  • Milward, Alan S. The Reconstruction of Western Europe: 1945–51 (Univ. of California Press, 1984)
  • Pasture, Patrick (2015). Imagining European unity since 1000 AD. New York: Palgrave Macmillan. ISBN 9781137480460.
  • Patel, Kiran Klaus, and Wolfram Kaiser. "Continuity and change in European cooperation during the twentieth century." Contemporary European History 27.2 (2018): 165–182. online
  • Smith, M.L.; Stirk, P.M.R., eds. (1990). Making The New Europe: European Unity and the Second World War (1st UK ed.). London: Pinter Publishers. ISBN 0-86187-777-2.
  • Stirk, P.M.R., ed. (1989). European Unity in Context: The Interwar Period (1st ed.). London: Pinter Publishers. ISBN 9780861879878.
  • Young, John W. Britain, France, and the unity of Europe, 1945–1951 (Leicester University, 1984).

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 européenne). 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		                     European Union (EU) [Cont.]  
European Communities (EC)  
European Atomic Energy Community (EAEC or Euratom) [Cont.]      
/ / / European Coal and Steel Community (ECSC)    
    European Economic Community (EEC)   European Community (EC)
            Schengen Rules
  North Atlantic Treaty Organisation (NATO) [Cont.] Terrorism, Radicalism, Extremism and Violence Internationally (TREVI) Justice and Home Affairs (JHA) European Community (borders, asylum and immigration) and Police and Judicial Co-operation in Criminal Matters (PJCC)

Anglo-French alliance		 [Defence org. handed to NATO] European Political Co-operation (EPC) Common Foreign and Security Policy
(CFSP)
Western Union (WU) / Western European Union (WEU) [Tasks handed to EU]  
     
[Social, cultural tasks handed to CoE]   [Cont.]              
    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 EDC
S: 18 April 1951/27 May 1952
F: 23 July 1952/―
E: 23 July 2002/―
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
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
¹Although not EU treaties per se, these treaties affected the development of the EU defence arm, a main part of the CFSP. The Franco-British alliance established by the Dunkirk Treaty was de facto superseded by WU. The CFSP pillar was bolstered by some of the security structures that had been established within the remit of the 1955 Modified Brussels Treaty (MBT). The Brussels Treaty was terminated in 2011, consequently dissolving the WEU, as the mutual defence clause that the Lisbon Treaty provided for EU was considered to render the WEU superfluous. The EU thus de facto superseded the WEU.
²The treaties of Maastricht and Rome form the EU's legal basis, and are also referred to as the Treaty on European Union (TEU) and the Treaty on the Functioning of the European Union (TFEU), respectively. They are amended by secondary treaties.
³The European Communities obtained common institutions and a shared legal personality (i.e. ability to e.g. sign treaties in their own right).
⁴Between the EU's founding in 1993 and consolidation in 2009, the union consisted of three pillars, the first of which were the European Communities. The other two pillars consisted of additional areas of cooperation that had been added to the EU's remit.
⁵The consolidation meant that the EU inherited the European Communities' legal personality and that the pillar system was abolished, resulting in the EU framework as such covering all policy areas. Executive/legislative power in each area was instead determined by a distribution of competencies between EU institutions and member states. This distribution, as well as treaty provisions for policy areas in which unanimity is required and qualified majority voting is possible, reflects the depth of EU integration as well as the EU's partly supranational and partly intergovernmental nature.


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