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Treaty of Accession 1972

Treaty concerning the accession of the Kingdom of Denmark, Ireland, the Kingdom of Norway and the United Kingdom of Great Britain and Northern Ireland to the European Economic Community and to the European Atomic Energy Community
Countries involved in the treaty, with newly joining countries in yellow, countries who failed to join in red, and existing EC countries in blue.
Signed 22 January 1972
Location Brussels
Effective 1 January 1973
Condition ratification by Denmark, Ireland, Norway, the United Kingdom and all 6 Member States of the European Union
Signatories 10
9 / 10
Depositary Government of the Italian Republic
Languages All 4 official Languages of the European Union, Danish, English, Irish and Norwegian

The Treaty of Accession 1972 was the agreement between the European Communities and four countries (Denmark, Ireland, Norway and the United Kingdom), concerning these countries' accession into the EC. It entered into force on 1 January 1973. The Treaty arranged accession of Denmark, Ireland and the United Kingdom to the EC and amended earlier treaties of the European Communities. As such it is an integral part of the constitutional basis of the European Union.[1] Norway failed to join the EU because its referendum did not pass.


  • Full title 1
  • Referendums 2
  • See also 3
  • References 4

Full title

The full official name of the treaty is:


See also


  1. ^
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