March 25
Treaty of Rome Establishes European Economic Community
Summary
In the aftermath of World War II, six Western European nations sought deeper economic integration to foster peace and recovery. On March 25, representatives from Belgium, France, Italy, Luxembourg, the Netherlands, and West Germany signed the Treaty establishing the European Economic Community at the Palazzo dei Conservatori in Rome. The agreement created a common market with free movement of goods, services, capital, and people, alongside the parallel Euratom treaty for atomic energy cooperation. It entered into force in 1958 and laid institutional foundations for later European unity.
Why It Matters
The treaty initiated the process of European economic and political integration that evolved into the European Union, reducing trade barriers and promoting postwar stability. Its customs union and institutions directly shaped the single market, euro, and enlargement policies of subsequent decades.
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Sources
- Treaty of Rome, Wikimedia Foundation. Accessed 2026-07-09.
- Treaty of Rome, Encyclopædia Britannica. Accessed 2026-07-09.