European integration in the context of "Economic integration"

The European Union (EU) has expanded a number of times throughout its history by way of the accession of new member states to the Union. To join the EU, a state needs to fulfil economic and political conditions called the Copenhagen criteria (named after the Copenhagen summit in June 1993), which require a stable democratic government that respects the rule of law, and its corresponding freedoms and institutions. According to the Maastricht Treaty, each current member state and the European Parliament must agree to any enlargement. The process of enlargement is sometimes referred to as European integration. This term is also used to refer to the intensification of co-operation between EU member states as national governments allow for the gradual harmonisation of national laws.

The EU's predecessor, the European Economic Community, was founded with the Inner Six member states in 1958, when the Treaty of Rome came into force. Since then, the EU's membership has grown to twenty-seven, with the latest member state being Croatia, which joined in July 2013. The most recent territorial enlargement of the EU was the incorporation of Mayotte in 2014. Campione d'Italia joined the EU Customs Union in 2020. The most notable territorial reductions of the EU, and its predecessors, have been the exit of Algeria upon independence in 1962, the exit of Greenland in 1985, and the withdrawal of the United Kingdom in 2020.

The European Coal and Steel Community (ECSC) was a European organization created after World War II to integrate Europe's coal and steel industries into a single common market based on the principle of supranationalism which would be governed by the creation of a High Authority made up of appointed representatives from the member states who would not represent their national interest, but would take and make decisions in the general interests of the Community as a whole. It was formally established in 1951 by the Treaty of Paris, signed by Belgium, France, Italy, Luxembourg, the Netherlands, and West Germany and was generally seen as the first step in the process of European integration following the end of the Second World War in Europe. The organization is a spiritual predecessor to the contemporary European Union (EU) as its subsequent enlargement of both members and duties ultimately led to the creation of the EU.

The ECSC was first proposed via the Schuman Declaration by French foreign minister Robert Schuman on 9 May 1950 (commemorated in the EU as Europe Day), the day after the fifth anniversary of the end of World War II, to prevent another war between France and Germany. He declared "the solidarity in production" from pooling "coal and steel production" would make war between the two "not only unthinkable but materially impossible". The Treaty created a common market among member states that stipulated free movement of goods (without customs duties or taxes) and prohibited states from introducing unfair competitive or discriminatory practices.

Albert Camus (/kæˈmuː/ ka-MOO; French: [albɛʁ kamy] ; 7 November 1913 – 4 January 1960) was a French philosopher, novelist, author, dramatist, journalist, world federalist, and political activist. He was the recipient of the 1957 Nobel Prize in Literature at the age of 44, the second-youngest recipient in history. His works include The Stranger, The Plague, The Myth of Sisyphus, The Fall and The Rebel.

Camus was born in French Algeria to pied-noir parents. He spent his childhood in a poor neighbourhood and later studied philosophy at the University of Algiers. He was in Paris when the Germans invaded France during World War II in 1940. Camus tried to flee but finally joined the French Resistance where he served as editor-in-chief at Combat, an outlawed newspaper. After the war, he was a celebrity figure and gave many lectures around the world. He married twice but had many extramarital affairs. Camus was politically active; he was part of the left that opposed Joseph Stalin and the Soviet Union because of their totalitarianism. Camus was a moralist and leaned towards anarcho-syndicalism. He was part of many organisations seeking European integration. During the Algerian War (1954–1962), he kept a neutral stance, advocating a multicultural and pluralistic Algeria, a position that was rejected by most parties.

The European Space Agency (ESA), pronounced 'ee-sah', is a 23-member international organisation devoted to space exploration. It has its headquarters in Paris and a staff of around 2,547 people globally as of 2023. ESA was founded in 1975 in the context of European integration. Its 2025 annual budget was €7.7 billion.

The ESA human spaceflight programme includes participation in the International Space Station (ISS) and collaboration with NASA on the Artemis programme, especially manufacturing of the Orion spacecraft's European Service Module (ESM). ESA launches and operates uncrewed missions to the Moon, Mars, Jupiter, Venus, Mercury, the Sun, and various comets and asteroids. Other activities include space telescopes, Earth observation satellites, asteroid impact avoidance, telecommunication and navigation satellites, designing launch vehicles (e.g. Ariane 6 is operated through Arianespace with ESA sharing in the costs), and maintaining Europe's Spaceport (the Guiana Space Centre at Kourou, French Guiana), as well as space safety and commercialisation.

The Treaty on European Union, commonly known as the Maastricht Treaty, is the foundation treaty of the European Union (EU). Concluded in 1992 between the then-twelve member states of the European Communities, it announced "a new stage in the process of European integration" chiefly in provisions for a shared European citizenship, for the eventual introduction of a single currency, and (with less precision) for common foreign and security policies, and a number of changes to the European institutions and their decision-making procedures, not least a strengthening of the powers of the European Parliament and more majority voting on the Council of Ministers. Although these were seen by many to presage a "federal Europe", key areas remained inter-governmental with national governments collectively taking key decisions. This constitutional debate continued through the negotiation of subsequent treaties (see below), culminating in the 2007 Treaty of Lisbon.

In the wake of the Eurozone debt crisis unfolding from 2009, the most enduring reference to the Maastricht Treaty has been to the rules of compliance – the "Maastricht criteria" – for the currency union.

The Schuman Declaration, or Schuman Plan, was a proposal to place French and West German production of coal and steel under a single authority that later became the European Coal and Steel Community, made by the French foreign minister, Robert Schuman, on 9 May 1950 (now celebrated in the EU as Europe Day), the day after the fifth anniversary of the end of World War II in Europe. The alliance would later be opened to other European countries. The ultimate goal was to pacify relations, especially between France and West Germany, through gradual political integration to be achieved by creating common interests. Schuman said that "[t]he coming together of the countries of Europe requires the elimination of the age-old opposition of France and Germany ... the solidarity in production thus established will make it plain that any war between France and Germany becomes not merely unthinkable, but materially impossible."

Konrad Adenauer, the first Chancellor of the Federal Republic of Germany, responded positively to the Declaration, as did the governments of the Netherlands, Belgium, Italy, and Luxembourg. On 18 April 1951, the six founding members signed the Treaty of Paris. It created the European Coal and Steel Community – Europe's first supranational community, which paved the way for the European Economic Community and subsequently the European Union.

The European Committee of the Regions (CoR) is the European Union's (EU) assembly of local and regional representatives that provides sub-national authorities (i.e. regions, counties, provinces, municipalities and cities) with a direct voice within the EU's institutional framework.

Established in 1994, the CoR was set up to address two main issues. First, about three quarters of EU legislation is implemented at local or regional level, so local and regional representatives needed to have a say in the development of new EU laws. Second, there were concerns about a widening gap between the public and the process of European integration; involving the elected level of government closest to the citizens was one way of closing the gap.

Young European Federalists (French: Jeunes Européens Fédéralistes, JEF) is a political youth organisation. Active in most European countries, it seeks to promote European integration through the strengthening and democratisation of the European Union (EU). JEF has close ties to the European Movement and the Union of European Federalists and is a full member of the European Youth Forum (YFJ), as well as Generation Climate Europe.

Former activists of JEF can join the alumni association, Friends of JEF.