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        April 1951 (signed) / July 1952 (enacted) Created: High authority Council Ministers (Some QMV) Common Assembly Court of Justice
  (Lays Foundation for a common market in coal, steal iron ore and scrape) |  
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        | Treaty of Rome (Creation of EEC) |  
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        March 1957 (signed) / January 1958 (enacted) Created: Commission Council of Ministers QMV more restrictive then Treaty of Paris Assembly and cour of justice to serve all three communities
  (Lays foundations and timetable for a customs union with removal of internal barriers to trade and the establishment of a common external tariff. Creates common market with some common policies including agriculture and transport.) |  
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        | European Economic Community |  
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        | Treaty of Rome (Creation of Euratom) |  
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        March 1957 (signed) / April 1958 (enacted)
  Promotes activities in nuclear activities and  provides for the possibility of a common market for atomic materials. |  
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        | European Atomic Energy Community |  
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        February 1986 (Signed) / July 1987 (Enacted)
  European Council is given legal recognition QMV is extended (notably to internal market measures) Cooperation procedure is created giving EP more powers Assent procedure created Aim of completing internal market by 1992 given treaty status Environment, economic cohesion, social cohesion and research & development added to EEC policy areas |  
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        February 1992 (signed) / November 1993 (enacted) Created European Union and the Three Pillars extended legal basis of QMV Creates co-decision legislative procedure increasing power of EP Framework and timetable  for reating EMU added to EC treaty Development, public health and consumer protection added to EC policy areas |  
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        | Common Foreign and Security Policy (Second pillar of Maastricht Treaty) |  
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        | Quantified Majority Voting |  
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        October 1997 (signed) / May 1999 (enacted) Extended QMV Co-decision extended and amended Created enhanced cooperation procedure Creates post of High Representative for CFSP CFSP strengthened  Most of JHA pillar Transfered to EC pillar Anti-discrimination, promoting employment, and consumer protection added to EC pillar |  
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        February 2001 (signed) / February 2003 (enacted) Changed national representation of EU in preparation for enlargement Changed QMV weightings extended QMV co-decision extended slightly enhanced cooperation procedure made easier to apply Slightly extended some areas of JHA and social policy fields |  
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        December 2007 (signed) / December 2009 (enacted) European 'community' disappears Third pillar moved to TFEU but second pillar remains in TEU creates European council president creates High representative of foreign affairs and security policy Extends QMV New voting system established which will come into effect in 2014 co-decision renamed 'ordinary legislative procedure' and extended JHA policy strengthened defense policy given greater recognition |  
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