A Brief History of European Integration based on the treaties

The European Union is based on the rule of law. This means that every action taken by the EU is founded on treaties that have been approved voluntarily and democratically by all EU member countries. For example, if a policy area is not cited in a treaty, the Commission cannot propose a law in that area.

A treaty is a binding agreement between EU member countries. It sets out EU objectives, rules for EU institutions, how decisions are made and the relationship between the EU and its member countries.

Treaties are amended to make the EU more efficient and transparent, to prepare for new member countries and to introduce new areas of cooperation – such as the single currency.

Under the treaties, EU institutions can adopt legislation, which the member countries then implement. The complete texts of treaties, legislation, case law and legislative proposals can be viewed using the EUR-Lex database of EU law.

The main treaties are:

Treaty of Lisbon​

pdfChoose translations of the previous link

Treaty of Nice

Treaty of Amsterdam

pdfChoose translations of the previous link

Treaty on European Union – Maastricht Treaty

pdfChoose translations of the previous link

Single European Act

pdfChoose translations of the previous link

Merger Treaty – Brussels Treaty

Treaties of Rome : EEC and EURATOM treaties
pdfChoose translations of the previous link

Treaty establishing the European Coal and Steel Community

Source: http://europa.eu/eu-law/decision-making/treaties/index_en.htm