The characteristics Indo-European languages share with respect to vocabulary and grammar have led many scholars to postulate that they are all descended from an original parent language, called Proto-Indo-European, which is believed to have been spoken some time before 4000 B.C., perhaps before 8000 B.C. or earlier. Since there are no written records of Proto-Indo-European, it apparently was in use before writing was known to its speakers. Even its existence is an assumption, although a plausible one and the only really satisfactory explanation of the common features of the modern Indo-European languages. There has been much speculation as to the region where the speakers of Proto-Indo-European first lived and the nature of their culture, but nothing definite is known. One theory of the origin of the individual Indo-European languages suggests that as the ancient speakers of Proto-Indo-European migrated or moved away from each other, losing contact, their language broke up into a number of tongues. These tongues later also split up still further, eventually giving rise to the many modern Indo-European languages. For a classification of Indo-European subfamilies, groups, subgroups, and individual languages, see the table entitled The Indo-European Family of Languages. By studying the vocabulary and grammar of the various daughter languages of which there are records, scholars have tried to reconstruct Proto-Indo-European and infer some of its characteristics. It appears to have been highly inflected in a distinctive way. Apparently, it also had three genders (masculine, feminine, and neuter) for nouns, pronouns, and adjectives; eight cases for the noun; agreement between adjectives and nouns; and a free accent (i.e., one that could be placed on any syllable).

The descendant languages have all tended to discard to a greater or lesser extent these features of the mother tongue and to become simplified. For example, they substitute increasingly the use of word order and prepositions for inflections to indicate the relationships of words in a sentence. There also exists among the Indo-European languages a similarity of basic words (such as words denoting kinship, numerals, and parts of the body) that points to a common origin. Different forms of writing for the various Indo-European languages used both in ancient and modern times include cuneiform, hieroglyphics, and a number of alphabets, among them the Devanagari, Greek, Roman, and Arabic scripts.

See articles on many of the Indo-European subfamilies, groups, and languages.

Organizational Structure

The EC, which is the core of the EU, originally referred to the group of Western European nations that belonged to each of three treaty organizations—the European Coal and Steel Community (ECSC), the European Economic Community (EEC), and the European Atomic Energy Community (Euratom). In 1967 these organizations were consolidated under a comprehensive governing body composed of representatives from the member nations and divided into four main branches—the European Commission (formerly the Commission of the European Communities), the Council of the European Union (formerly the Council of Ministers of the European Communities), the European Parliament, and the European Court of Justice.

Although the EU has no single seat of government, many of its most important offices are in Brussels, Belgium. The European Commission, which has executive and some legislative functions, is headquartered there, as is the Council of the European Union; it is also where the various committees of the European Parliament generally meet to prepare for the monthly sessions in Strasbourg, France. In addition to the four main branches of the EU's governing body, there are the Court of Auditors, which oversees EU expenditures; the Economic and Social Committee, a consultative body representing the interests of labor, employers, farmers, consumers, and other groups; and the European Council, a consultative but highly influential body composed primarily of the president of the Commission and the heads of government of the EU nations and their foreign ministers.

Evolution

The history of the EU began shortly after World War II, when there developed in Europe a strong revulsion against national rivalries and parochial loyalties. While postwar recovery was stimulated by the Marshall Plan, the idea of a united Europe was held up as the basis for European strength and security and the best way of preventing another European war. In 1950 Robert Schuman, France's foreign minister, proposed that the coal and steel industries of France and West Germany be coordinated under a single supranational authority. France and West Germany were soon joined by four other countries—Belgium, Luxembourg, the Netherlands, and Italy—in forming (1952) the ECSC. The EEC (until the late 1980s it was known informally as the Common Market) and Euratom were established by the Treaty of Rome in 1958. The EEC, working on a large scale to promote the convergence of national economies into a single European economy, soon emerged as the most significant of the three treaty organizations.

The Brussels Treaty (1965) provided for the merger of the organizations into what came to be known as the EC and later the EU. Under Charles de Gaulle, France vetoed (1963) Britain's initial application for membership in the Common Market, five years after vetoing a British proposal that the Common Market be expanded into a transatlantic free-trade area. In the interim, Britain had engineered the formation (1959) of the European Free Trade Association. In 1973 the EC expanded, as Great Britain, Ireland, and Denmark joined. Greece joined in 1981, and Spain and Portugal in 1986. With German reunification in 1990, the former East Germany also was absorbed into the Community.

The Single European Act (1987) amended the EC's treaties so as to strengthen the organization's ability to create a single internal market. The Treaty of European Union, signed in Maastricht, the Netherlands, in 1992 and ratified in 1993, provided for a central banking system, a common currency to replace the national currencies (the euro, see European Monetary System), a legal definition of the EU, and a framework for expanding the EU's political role, particularly in the area of foreign and security policy. The member countries completed their move toward a single market in 1993 and agreed to participate in a larger common market, the European Economic Area (est. 1994), with most of the European Free Trade Association (EFTA) nations. In 1995, Austria, Finland, and Sweden, all former EFTA members, joined the EU, but Norway did not, having rejected membership for the second time in 1994.

A crisis within the EU was precipitated in 1996 when sales of British beef were banned because of "mad cow disease" (see prion). Britain retaliated by vowing to paralyze EU business until the ban was lifted, but that crisis eased when a British plan for eradicating the disease was approved. The ban was lifted in 1999, but French refusal to permit the sale of British beef resulted in new strains within the EU. In 1998, as a prelude to their 1999 adoption of the euro, 11 EU nations established the European Central Bank. The euro was introduced into circulation in 2002 by 12 EU nations; additional EU nations have since adopted it.

The EU was rocked by charges of corruption and mismanagement in its executive body, the European Commission (EC), in 1999. In response the EC's executive commission including its president, Jacques Santer, resigned, and a new group of commissioners headed by Romano Prodi was soon installed. In actions taken later that year the EU agreed to absorb the functions of the Western European Union, a comparatively dormant European defense alliance, thus moving toward making the EU a military power with defensive and peacekeeping capabilities.

The installation in Feb., 2000, of a conservative Austrian government that included the right-wing Freedom party, whose leaders had made xenophobic, racist, and anti-Semitic pronouncements, led the other EU members to impose a number of sanctions on Austria that limited high-level contacts with the Austrian government. Enthusiasm for the sanctions soon waned, however, among smaller EU nations, and the issue threatened to divide the EU. A face-saving fact-finding commission recommended ending the sanctions, stating that the Austrian government had worked to protect human rights, and the sanctions were ended in September.

In 2003 the EU and ten non-EU European nations (Estonia, Latvia, Lithuania, Poland, the Czech Republic, Slovakia, Hungary, Slovenia, Cyprus, and Malta) signed treaties that resulted in the largest expansion of the EU the following year, increasing the its population by 20% and its land area by 23%. Most of the newer members are significantly poorer than the largely W European older members. The old and new member nations at first failed to agree on a constitution for the organization; the main stumbling block concerned voting, with Spain and Poland reluctant to give up a weighted system of voting scheduled for 2006 that would give them a disproportionate influence in the EU relative to their populations. In Oct., 2004, however, EU nations signed a constitution with a provision requiring a supermajority of nations to pass legislation. The constitution, which needed to be ratified by all members to come into effect, was rejected by voters in France and the Netherlands in 2005, leading EU leaders to pause in their push for its ratification.

Meanwhile, in 2003 the EU embarked, in minor ways, on its first official military missions when EU peacekeeping forces replaced the NATO force in Macedonia and were sent by the United Nations to Congo (Kinshasa); the following year the EU assumed responsibility for overseeing the peacekeepers in Bosnia. EU members also took steps toward developing a common defense strategy independent of NATO, and agreed in 2004 to admit Bulgaria and Romania in 2007. José Manuel Barroso succeeded Prodi as president of the European Commission late in 2004. Accession talks with Turkey were partially suspended in Dec., 2006, over the issue of Turkish relations with Cyprus because Turkey was unwilling to open its ports to Cypriot trade unless the EU eased its trade restrictions on North Cyprus.

The EU opted for incremental reforms over a new constitution in 2007, when member nations signed the Lisbon Treaty. The treaty, slated to come into force in 2009 after ratification by all EU nations, would reorganize the European Council, establish a single EU foreign policy official, and reform the EU's system of voting, among other changes. (The reforms would be phased in through 2017.) In June, 2008, however, Irish voters—the only national electorate given the opportunity to ratify the treaty—rejected it in a referendum, a potentially fatal setback.

The headquarters of ESA are in Paris, with four major ESA facilities in other countries. The European Space Research and Technology Center (ESTEC), located at Noordwijk, the Netherlands, is the primary research center and manages the satellite projects. The European Space Operations Center (ESOC), located at Darmstadt, Germany, is responsible for satellite control, monitoring, and data retrieval. The European Space Research Institute (ESRIN), located at Frascati, Italy, supports the ESA documentation service and manages the data obtained from remote sensing satellites. The European Astronaut Center (EAC), located at Cologne, Germany, is responsible for the selection and training of astronauts for space station missions. In addition to the major centers, ESA operates sounding-rocket launch stations in Norway and Sweden, a meteorological program office at Toulon, France, and satellite tracking stations in Belgium, Germany, Italy, and Spain.

Major ESA programs include the development of the Ariane rockets used to launch most ESA satellites from a pad at Kourou, French Guiana. ESA developed the Spacelab scientific workshop, which has been transported into space several times by the U.S. National Aeronautics and Space Administration's (NASA) space shuttle; the Giotto space probe, which in a 1986 flyby examined the nucleus of Halley's comet; and the SOHO (Solar and Heliospheric Observatory) and ISO (Infrared Space Observatory) orbiting observatories, launched in 1995. A system of meteorological satellites, called Meteosat, has also been established. Eleven member nations of ESA are also participating with Brazil, Canada, Japan, Russia, and the United States in the International Space Station project (see space station). Arianespace, the first commercial space transportation company and a division of ESA, now conducts more than half of all commercial satellite launches.

The foundation of ESA was laid with the formation of the European Space Research Organization (ESRO) in 1962 and of the European Launcher Development Organization (ELDO) in 1964. ESRO consisted of ten European countries and Australia, which placed its rocket-firing range at Woomera at the organization's disposal; between 1968 and 1972 seven ESRO satellites—Iris (ESRO-2B), Aurorae (ESRO-1A), HEOS-1, BOREAS, HEOS-2, TD-1A, and ESRO-4—were launched on NASA rockets. ELDO, which consisted of seven European countries, developed Kourou's Equatorial Space Range. Intending to build the Europa 1 multistage launch vehicle—combining a British first stage, a French second stage, and a German third stage—to orbit an Italian satellite, ELDO was unsuccessful primarily because of organizational problems. By 1975 it was obvious that a new approach was required, and ESRO and ELDO were merged to form ESA.

The older observatory, inaugurated in 1969, is located on Cerro La Silla at an altitude of about 8,000 ft (2,400 m). The initial instrument was a 3.6-m (142-in.) reflecting telescope, but in 1989 the 3.58-m (141-in.) New Technology Telescope (NTT) was installed. Its primary mirror is three times faster than the 3.6-m and has only half its weight. It uses a principle called active optics, in which the optics are adjusted by computer to react to the changing seeing conditions of the night sky. Other instruments include a 2.2-m (86.6-in.) reflector, a 0.5-m (20-in.) reflector, a 1-m (39.4-in.) Schmidt camera telescope, twin 0.4-m (15.7-in.) astrographic telescopes, a 1.52-m (60-in.) spectrographic reflector, and a 1-m (39.4-in.) photometric reflector. Also located at Cerro La Silla are a 0.5-m (20-in.) reflector belonging to Denmark and a 0.62-m (24.4-in.) reflector belonging to the Univ. of Bochum, Germany.

The second observatory, initiated in 1988 and inaugurated in 1999, is located atop Cerro Paranal at an altitude of about 8,640 ft (2,635 m). The observatory is the home of the Very Large Telescope (VLT) program. Begun in 1996, it links four 315-in. (8-m) telescopes together with several movable 72-in. (1.8-m) telescopes through optical interferometry, a technique in which the signals from each telescope enhance the signals from the others. Completed in 2003, the combination produces a virtual telescope image equivalent to that of a 630-in. (16-m) conventional reflecting telescope.

Among the other programs of the observatory is the completion of the photographic Sky Survey for the Southern Hemisphere, in cooperation with the Siding Spring Observatory in Australia. This project is a continuation of the work begun in the Northern Hemisphere with the Schmidt telescope at Palomar Observatory.

In 1994 the European Monetary Institute was created as transitional step in establishing the European Central Bank (ECB) and a common currency. The ECB, which was established in 1998, is responsible for setting a single monetary policy and interest rate for the adopting nations, in conjunction with their national central banks. Late in 1998, Austria, Belgium, Finland, France, Germany, Ireland, Italy, Luxembourg, the Netherlands, Portugal, and Spain cut their interest rates to a nearly uniformly low level in an effort to promote growth and to prepare the way for a unified currency.

At the beginning of 1999, the same EU members adopted a single currency, the euro, for foreign exchange and electronic payments. (Greece, which did not meet the economic conditions required until 2000, subsequently also adopted the euro.) The introduction of the euro four decades after the beginings of the European Union was widely regarded as a major step toward European political unity. By creating a common economic policy, the nations acted to put a damper on excessive public spending, reduce debt, and make a strong attempt at taming inflation. However, the budget-deficit ceilings established in the process of introducing the euro have been violated by a number of countries since 2001, in part because of national government measures to stimulate economic growth. In 2003, EU finance ministers, faced with the fact that economic downturns had put France and Germany in violation of the ceilings, temporarily suspended the pact. The European Commission challenged that move, however, and the EU high court annulled the finance ministers' decision in 2004.

Euro coins and notes began circulating in Jan., 2002, and local currencies were no longer accepted as legal tender two months later. The European Currency Unit (ECU), which was established in 1979, was the forerunner of the euro. Derived from a basket of varying amounts of the currencies of the EU nations, the ECU was a unit of accounting used to determine exchange rates among the national currencies.

Of the European Union members—Denmark, Great Britain, and Sweden—that did not adopt the euro when it was introduced perhaps the most notable is Britain, which continues to regard itself as more or less separate from Europe. In all three nations there has been strong public anxiety that dropping their respective national currencies would give up too much independence. Danish voters rejected adoption of the euro in a referendum in 2000; the vote was seen as strengthening euro opponents in Britain and Sweden. Of the 12 EU members admitted since 2004, three—Slovenia, Malta, and Cyprus—have adopted the euro.

EFTA began with two goals: to establish free trade among members and to seek a broader economic union with the rest of Western Europe. The first was accomplished in 1966, when most of the intra-EFTA tariffs were abolished. Negotiations toward the second goal began in 1961, when Great Britain sought entry into the EEC. Its bid was rejected (1963) by France; however, later discussions succeeded, and in 1973 Denmark and Great Britain left EFTA to join the EC. The same negotiations produced a trade accord between the newly expanded EC and the remaining members of EFTA. In 1986, Portugal also left EFTA for the EC. The development of a single market between the EU and most EFTA nations was completed in 1994, when the European Economic Area (EEA) came into being. EFTA members Austria, Finland, and Sweden joined the EU in 1995, but in Norway the voters rejected a similar move.

In 1958, Britain proposed that the Common Market be expanded into a transatlantic free-trade area. After the proposal was vetoed by France, Britain engineered the formation (1960) of the European Free Trade Association (EFTA) and was joined by other European nations that did not belong to the Common Market. Beginning in 1973, EFTA and the EEC negotiated a series of agreements that would insure uniformity between the two organizations in many areas of economic policy, and by 1995, all but four of EFTA's members had transferred their memberships from EFTA to the European Union.

One of the first important accomplishments of the EEC was the establishment (1962) of common price levels for agricultural products. In 1968, internal tariffs (tariffs on trade between member nations) were eliminated and a common external tariff was fixed. For subsequent developments, see European Union.

The court interprets EU treaties and legislation. Although it may attempt to reconcile differences between national and EU laws, ultimately its decisions overrule those of national courts; they have tended to expand the EU's domain. Increased litigation over the years led to the establishment (1988) of a lower court, the Court of First Instances; appeals to the Court of Justice are tightly restricted. International law cases involving nations outside the EU are heard by the World Court in The Hague; the European Court of Human Rights in Strasbourg, France, is recognized by the members of the Council of Europe and hears cases relating to the European Convention for the Protection of Human Rights and Personal Freedoms.

In keeping with the objective of the founding treaties, the commission initiates EU policy on the economy in particular but, increasingly, also on environmental and foreign and security affairs. The legislation it drafts is subject to amendment by the European Parliament and to ratification by the Council of the European Union. It was under the presidency of Jacques Delors (1985-95) that the commission put forward the Single European Act (1987) and the Treaty of European Union (1992; also known as the Maastricht Treaty), both of which provided for a significant expansion of the EU's powers. In 1995, Jacques Santer of Belgium became president of the commission. The entire commission resigned in 1999 amid accusations of financial mismanagement, corruption, fraud, and nepotism, and a new set of commissioners, with Romano Prodi of Italy as president, was appointed later the same year. In 2004, José Manuel Barroso succeeded Prodi as president.

The council is composed of one minister from the government of each EU nation. Membership is fluid, with each government sending the minister appropriate to the subject then under consideration by the council. The foreign minister is generally regarded as the coordinator and main representative of each government's delegation. The presidency of the council rotates among the member nations. Much of the council's work is prepared by a general secretariat and the Committee of Permanent Representatives, or COREPER, composed of officials from the national governments. Although unanimity of the council is still required in some cases, the Single European Act (1987) expanded the council's ability to make decisions based on a majority vote. Votes of council members are weighted according to the size of the nations they represent.

Association of 10 European countries to coordinate matters of European security and defense. The WEU was formed in 1955 as an outgrowth of the Brussels Treaty of 1948. Composed of Belgium, France, Germany, Greece, Italy, Luxembourg, The Netherlands, Portugal, Spain, and Britain, it works in cooperation with NATO and the European Union and is administered by a council of the foreign affairs and defense ministers of the member countries. There are also several associate members, observers, and associate partners. It is headquartered in Brussels.

Learn more about Western European Union (WEU) with a free trial on Britannica.com.

Learn more about European Union (EU) with a free trial on Britannica.com.

Western European space and space-technology research organization headquartered in Paris. It was founded in 1975 from the merger of the European Launcher Development Organisation (ELDO) and the European Space Research Organisation (ESRO), both established in 1964. Members are Austria, Belgium, Britain, Denmark, Finland, France, Germany, Ireland, Italy, The Netherlands, Norway, Portugal, Spain, Sweden, and Switzerland. Canada, through a special cooperative agreement, participates in some projects. The ESA developed the Ariane series of space launch vehicles, and it supports a launch facility in French Guiana. It has launched a system of meteorological satellites (Meteosat) as well as the Giotto space probe, which examined the nucleus of Halley's Comet, and Hipparcos, a satellite that measured the parallaxes, positions, and proper motions of more than 100,000 stars. It is also a participant in the construction of the International Space Station.

Learn more about European Space Agency (ESA ) with a free trial on Britannica.com.

(1948–51) U.S.-sponsored program to provide economic aid to European countries after World War II. The idea of a European self-help plan financed by the U.S. was proposed by George Marshall in 1947 and was authorized by Congress as the European Recovery Program. It provided almost $13 billion in grants and loans to 17 countries and was a key factor in reviving their economies and stabilizing their political structures. The plan's concept was extended to less-developed countries under the Point Four Program.

Learn more about Marshall Plan with a free trial on Britannica.com.

Legislative assembly of the European Union (EU). Inaugurated in 1958 as the Common Assembly, the European Parliament originally consisted of representatives selected by the national parliaments of member countries. Beginning in 1979, members of the Parliament, who now number more than 700, were elected by direct universal suffrage to terms of five years. The number of members per country varies depending on population. The Parliament's leadership is shared by a president and 14 vice presidents, elected for 30-month terms. The EU Council of Ministers, which represents the member states, consults the Parliament, which is empowered to discuss whatever matters it wishes. The Parliament's powers were expanded with passage of the Maastricht Treaty (1993). Although it has veto power in most areas relating to economic integration and budgetary policy, it remains subordinate to the Council of Ministers and does not function with the authority of a national legislature such as the U.S. Congress or the British House of Commons.

Learn more about European Parliament with a free trial on Britannica.com.

International scientific organization established for collaborative research into subnuclear physics. Headquartered in Geneva, CERN includes extensive facilities at sites on both sides of the Swiss-French border. The results of its experimental and theoretical work are made generally available. It was established in part in order to reclaim European physicists who had emigrated to the U.S. as a result of World War II. In 2000 it had 20 European member nations and several nations with observer status.

Learn more about CERN with a free trial on Britannica.com.

International organization whose purpose is to remove barriers to trade in industrial goods among its members. The EFTA's current members are Iceland, Liechteinstein, Norway, and Switzerland. It was formed in 1960 by Austria, Denmark, Norway, Portugal, Sweden, Switzerland, and Britain as an alternative to the European Economic Community (EEC). Some of those countries later left the EFTA and joined the EEC. In the 1990s Iceland, Liechtenstein, and Norway joined the European Economic Area, which also included all members of the European Union. Each country in the EFTA maintains its own commercial policy toward countries outside the group.

Learn more about European Free Trade Association (EFTA) with a free trial on Britannica.com.

Association of European countries designed to promote European economic unity. It was established by the Treaty of Rome in 1957 to develop the economies of the member states into a single common market and to build a political union of the states of western Europe. The EEC also sought to establish a single commercial policy toward nonmember countries, to coordinate transportation systems, agricultural policies, and general economic policies, to remove measures restricting free competition, and to assure the mobility of labour, capital, and entrepreneurship among member states. The liberalized trade policies it sponsored from the 1950s were highly successful in increasing trade and economic prosperity in western Europe. In 1967 its governing bodies were merged into the European Community. In 1993 the EEC was renamed the European Community (EC); it is now the principal organization within the European Union.

Learn more about European Economic Community (EEC) with a free trial on Britannica.com.

Judicial branch of the European Union (EU), established in 1958 to ensure the observance of international agreements negotiated by predecessor organizations of the EU. Headquartered in Luxembourg, it reviews the legality of the acts of EU executive bodies and rules on cases of civil law between member states or private parties. It can invalidate the laws of EU members when they conflict with EU law. Its bench, which is appointed by member governments, consists of 25 judges and 8 advocates-general. Prior to 2004, the ECJ met as a full chamber for all cases, but it now may sit as a “grand chamber” of 11 judges. Seealso International Court of Justice.

Learn more about European Court of Justice with a free trial on Britannica.com.

Administrative agency designed to integrate the coal and steel industries of France, West Germany, Italy, Belgium, the Netherlands, and Luxembourg. It originated in the plan of Robert Schuman (1950) to establish a common market for coal and steel by those countries willing to submit to an independent authority. Created in 1952, the ECSC came to include all members of the European Union. It initially removed barriers to trade in coal, coke, steel, pig iron, and scrap iron; it later supervised the reduction of its members' excess production. In 1967 its governing bodies were merged into the European Community. When the treaty expired in 2002, the ECSC was dissolved.

Learn more about European Coal and Steel Community (ECSC) with a free trial on Britannica.com.

International organization established in 1958 to form a common market for developing peaceful uses of atomic energy. It originally had six members; it now includes all members of the European Union. Among its aims were to facilitate the establishment of a nuclear energy industry on a European rather than a national scale, coordinate research, encourage construction of power plants, establish safety regulations, and establish a common market for trade in nuclear equipment and materials. In 1967 its governing bodies were merged into the European Community.

Learn more about European Atomic Energy Community (Euratom) with a free trial on Britannica.com.