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The Treaty of Maastricht in 1992, along

After the crisis of the EDC, European integration focused on the economic field as the best way to accelerate the process. The leaders of the member states of the ECSC plus the UK met in 1955 in Messina in a conference where they agreed upon the creation of a preparatory committee for the construction of a common market and also a community based on atomic energy. It was a year after the rejection of the EDC, and all the parties involved were very cautious to avoid another failure that could have doomed the whole European project.