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* '''[[1 Yanuara]] [[1981]] (Duito buxlyarimos)''' — [[Grechiya]] avel ando EKh.
* '''[[1985]]''' — GrantedShov bersha palal i [[home ruleDanemark]] bydel Denmark six years earlier[[autonomiya]], [[Greenland]] decidesalosarel tote leaveinklel thekatar ECo following a [[referendum]]EKh. See [[SpecialUzalune memberriga statele territoriessomdasne andthemenge theirthai relationslenge withrelaciya thele EUEKhesa]] for details.
* '''[[1 JanuaryYanuara]] [[1986]] (ThirdTrinto Enlargementbuxlyarimos)''' — [[SpainSpaniya]] andthai [[PortugalPortugaliya]] accedeaven toando the ECEKh.
* '''[[3 OctoberOctubra]] [[1990]]''' — [[EastOriyentuti GermanyJermaniya]] andthai [[WestOkchidentutni GermanyJermaniya]] reunifypalemphandel (''seedikh [[GermanPhanidipen reunificationla Jermaniyako]]), automaticallythai addingi thepurani formerOriyentuti EastJermaniya Germanyavel toando the ECEKh; reunificationek addsphandipen tokiderel theando EC'sEKh areaphuv andthai populationmanusha, butta notchi thebaryarel numbero ofgin memberle statesthemenge.
* '''[[1 NovemberNovembra]] [[1993]]''' — TheO [[MaastrichtTrato TreatyMaastricht]] takesshirdel effect,te formallyavel establishingzakono, thekerindoi o [[EuropeanEuropikano UnionEkipen]].
* '''[[1 JanuaryYanuara]] [[1995]] (FourthShtarto Enlargementbuxlyarimos)''' — [[AustriaAustriya]], [[Finland]], andthai [[SwedenSveko]] accedekideren topen theando EUEE.
* '''[[1 MayMai]] [[2004]] (FifthPanjto Enlargement, part Ibuxlyarimos)''' {{rf|1|fifth}} — ComprisingO thebareder largestgin numberle ofthemenge countriesso everaven admitted at one timeekvar, [[CyprusChipro]], the [[Czech RepublicChexiya]], [[EstoniaEstoniya]], [[HungaryUngariya]], [[LatviaLetoniya]], [[LithuaniaLithuaniya]], [[Malta]], [[PolandPoloniya]], [[SlovakiaSlovakiya]], and [[SloveniaSloveniya]] accedekideren topen theando EUEE.
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