Maastricht | Treaty of Versailles | Treaty of Trianon | Treaty of Utrecht | Treaty of Aix-la-Chapelle | Maastricht University | Treaty of Berlin (1878) | Treaty of Rome | Treaty of Lisbon | Treaty of Campo Formio | Treaty of Berlin | Treaty of Aix-la-Chapelle (1748) | Maastricht Treaty | Treaty of the Pyrenees | Treaty of Saint-Germain-en-Laye (1919) | Treaty of Guadalupe Hidalgo | Penn Treaty Park | Lateran Treaty | Washington Naval Treaty | Treaty of San Stefano | Treaty of Roskilde | Treaty of Nice | Treaty of Frankfurt | Treaty of Brest-Litovsk | Treaty of Bassein | Treaty of Basel | Patent Cooperation Treaty | Treaty of Waitangi | Treaty of Schönbrunn | Treaty of Ryswick |
The ECSC was superseded, on 25 March 1957, by the Treaty of Rome, which established the European Economic Community (which would, in 1993, become the European Union through the Treaty of Maastricht).
It ceased to exist when it was integrated in the so-called Justice and Home Affairs (JHA) pillar of the European Union (EU) upon into force of the Treaty of Maastricht in 1992.