This document is an excerpt from the EUR-Lex website
Treaty establishing a single Council and a single Commission of the European Communities
The Brussels Treaty establishing a single Council and single Commission of the European Communities (known as the ‘Merger Treaty’) was signed with the explicit intention of unifying the 3 then-existing European Communities (EC) — the European Coal and Steel Community (ECSC), the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or more commonly known as ‘Euratom’).
While keeping the 3 communities legally independent, the Merger Treaty rationalised their institutions by merging their then still independent executive bodies — thus bringing to 5 the number of common European institutions — and amended the 3 community treaties accordingly.
Signed on , it applied from .
Before the Merger Treaty, the 3 European Communities already shared some common institutions by virtue of the 1957 Convention on certain institutions common to the European Communities: the Parliamentary Assembly (later to become the European Parliament), the Court of Justice and the Economic and Social Committee.
The Merger Treaty was a major stepping stone toward the modern EU. The treaty was repealed — with the exception of the Protocol of on the privileges and immunities of the European Communities — by the Amsterdam Treaty signed on which entered into force on .
For more information, see:
Treaty establishing a Single Council and a Single Commission of the European Communities (OJ 152, , pp. 2-17 (DE, FR, IT, NL))
Protocol on the privileges and immunities of the European Communities (OJ C 202, , pp. 266-272)
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