From the page 'Treaties' in Eur-Lex you can access the basic legal texts on which the European Union and the European Communities are founded: the founding Treaties (original versions and later updatings), the amending Treaties, the Accession Treaties for each of the six enlargements, plus other essential documents.
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The site EU Treaties gives you access to the full text of the main treaties with additional information.
The European Union Constitution brings together facts, official documents, analysis, bibliographies, links and other resources relevant to the main steps in the European constitutional process.
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