What is the Treaty of Rome?
The Treaty of Rome, which was signed in 1957 by the original six member states, laid much of the groundwork for the EU as it is today. It established the European Economic Community and Euratom, which were later brought together with the European Coal and Steel Community to form the European Communities, and later the European Union. The Treaty of Rome aimed to create a common market for the movement of goods, services, people and capital, led to the creation of a customs union — which was completed in 1968 — a common trade policy, the Common Agricultural Policy, the European Court of Justice and the European Commission, among other things. It was from this creation of the Court that establishment of the principle of the supremacy of EU law later followed.