INTRODTIONAfter World War II, Europe established its strengths and the danger coming from the nationalizations that had afflicted the continent. The idea of ​​the European Union was to bring together all the leaders of European states and get them to work together to create a strong union that would reduce the possibility of future wars, although there was some ideological groundswell in favor of a united Europe shortly after. Second World War, the European Union only came into being later. The objectives of this essay are to discuss the events that occurred between 1957 and 1993, but in order to understand the developments, I have briefly outlined the essential points about the ECSC, which will be revisited throughout the essay.1. Historical developments of a united Europe2. The main lines of EU law from 1957 to 1993• The Treaties of Rome (EEC and Euratom)• The Merger Treaty• The Single European Act• The Treaty of MaastrichtHISTORICAL EVOLUTION OF THE EUROPEAN UNIONThe first stage of the federation European Union was created in May 1950 by Robert Schuman, the Minister of Foreign Affairs of France. He made a historic proposal for the merger of the coal and steel industries of France and Germany, and any other country wishing to participate, under a high supranational authority. The proposal was enthusiastically endorsed by the Benelux countries, France, Germany and Italy. The treaty establishing the European ECSC for coal and steel was signed in Paris on April 18, 1951 and entered into force on July 20 of the following year. The goals inspired by the Schumann Declaration were to bring together heavy industries and set limited specific economic targets as steps towards the long-term political goal of the Euro...... middle of paper ...... unity • Subsidiarity • Citizenship • EMU • New legislative procedures (co. decision). This gives the European Parliament a veto on legislation for the first time • New activities and competences: education, culture, consumer protection, energy, industrial policy, development cooperation, social policy 2nd pillar Amendments to the ECSC and Eurotom treaties Common foreign and security policy (CFSP)• The European Council could adopt “common positions” on the basis of the agreement of member states, which then had to ensure that their national policies were consistent. • This replaced European political cooperation, which had existed since the mid-1960s. 3rd pillar JUSTICE and Home Affairs (JHA) • Policies on asylum, immigration and nationals of non-EC states • Provision on cooperation against international crime: judicial and police cooperation, including the creation of Europool