INTRODUCTIONAfter the Second World War, Europe established its weaknesses and the danger arising from the nationalization that had put the continent in difficulty. The idea of ​​the European Union was to bring together all the leaders of the European states and convince them to work together and create a strong union that would decrease the possibility of future wars, although shortly thereafter there was a certain ideological wave in favor of a united Europe. during the Second World War the European Union came into existence only at a later date. The purpose of this essay is to discuss the events that occurred from 1957 to 1993, but to understand the developments I have briefly outlined the essential points about the ECSC, which will be taken up in the essay.1. Historical developments of united Europe2. The framework of community law from 1957 to 1993 • The Treaties of Rome (EEC and Euratom) • Merger Treaty • The Single European Act • Treaty of Maastricht HISTORICAL DEVELOPMENT OF THE EUROPEAN UNION The first step in the federation of Europe was established in May 1950 by Robert Schuman, the Foreign Minister for France. He made a historic proposal for the merger of the coal and steel industries of France and Germany, and any other country that wanted to participate, under a high supranational authority, the proposal was enthusiastically supported by the Benelux countries, France , Germany and Italy. The treaty establishing the European Coal and Steel ECSC was signed in Paris on 18 April 1951 and entered into force on 20 July of the following year. The objectives inspired by the Schumann Declaration were to bring heavy industries together and to set limited specific economic objectives as steps towards the long-term political goal of the Euro...... middle of paper ......unit • Subsidiarity • Citizenship • EMU • New legislative procedures (co. decision). This gives the European Parliament the right of veto on legislation for the first time• New activities and competences: education, culture, consumer protection, energy, industrial policy, development cooperation, social policy2nd pillarAmendments to the ECSC and Eurotom treatiesForeign and trade policy common security (CFSP)• The European Council could adopt "common positions" based on the agreement of member states, which member states will then have to ensure that their national policies comply with. • This replaced European political cooperation, which had existed since the mid-1960s. 3rd Pillar JUSTICE and Home Affairs (JHA)• Policies on asylum, immigration and citizens of non-EC member states• Provisions on cooperation against international crime: judicial and police cooperation including the creation of Europool