Oracle
How many countries joined the European Union in its 2004 enlargement?
Answer
10
- answer
- the count, as a whole number
- source
- Answer from a reputable public source you actually read (an official government, parliament or electoral-commission site, the text of a treaty or constitution, Britannica, or a major news archive) and name it.
- missing
- If you cannot establish the fact from a source, report that; do not guess.
- subject
- The question is about political history, institutions and elections. The pinned chain and window of this request only timestamp it; the answer is a documented historical or institutional fact, not a reading taken at the pinned block.
- sources
- european-union.europa.eu, britannica ('european union' article, enlargement history) and the european union's official history page at european-union.europa.eu ('the history of the european union - 2000-2009'), both listing the ten states that acceded on 1 may 2004: cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, slovenia., britannica, "enlargement of the european union" (britannica.com), corroborated by the european union's official history page (european-union.europa.eu), britannica, "enlargement of the european union" and the european parliament's official record of the 2004 accession (10 countries joined on 1 may 2004: cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, slovenia), britannica, "european union" article, enlargement section; european union official history (european-union.europa.eu) — both list the 2004 accession of cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, and slovenia (10 countries)., britannica, 'european union' (britannica.com/topic/european-union), and the european union's official 'history of the eu' page (european-union.europa.eu/principles-countries-history/history-eu_en), both stating that 10 countries joined in the 2004 enlargement: cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, slovenia., britannica, 'european union' (britannica.com/topic/european-union), enlargement history section describing the 1 may 2004 accession of ten states: cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, slovenia., britannica, 'european union' (britannica.com/topic/european-union); european union official site, 'the history of the european union' (european-union.europa.eu/principles-countries-history/history-eu_en) — both state that on 1 may 2004 ten countries (cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, slovenia) joined the eu., britannica, 'european union' article, enlargement history; and european-union.europa.eu official history timeline, both confirming the 2004 enlargement admitted 10 member states on 1 may 2004., britannica, 'european union' article, section on the 2004 enlargement; and the european union's official history page (european-union.europa.eu) listing the 1 may 2004 accession of ten member states., commission.europa.eu, consilium, 2004 enlargement: facts and figures — https://www.consilium.europa.eu/en/infographics/2004-enlargement-facts-and-figures/, council of the european union (consilium), ‘timeline: history’ (2004 enlargement entry), https://www.consilium.europa.eu/en/history/ — states that ten countries joined on 1 may 2004., council of the european union, 'timeline: history' — https://www.consilium.europa.eu/en/history/ (states that ten new countries joined the eu on 1 may 2004)., council of the european union, 2004 enlargement: facts and figures (https://www.consilium.europa.eu/en/infographics/2004-enlargement-facts-and-figures/); european commission, history of enlargement: from 6 to 27 members (https://enlargement.ec.europa.eu/enlargement-policy/history-enlargement-6-27-members_en), council of the european union, 2004 enlargement: facts and figures — https://www.consilium.europa.eu/en/infographics/2004-enlargement-facts-and-figures/, council of the european union, 2004 enlargement: facts and figures: https://www.consilium.europa.eu/en/infographics/2004-enlargement-facts-and-figures/, council of the european union, ‘2004 enlargement: facts and figures’ (https://www.consilium.europa.eu/en/infographics/2004-enlargement-facts-and-figures/), states that 10 countries joined the eu on 1 may 2004., council of the european union, ‘2004 enlargement: facts and figures’ — https://www.consilium.europa.eu/en/infographics/2004-enlargement-facts-and-figures/, council of the european union, ‘2004 enlargement: testimonials’ (official council site), https://www.consilium.europa.eu/en/events/eu-enlargement-20-years/, en.wikipedia.org, encyclopaedia britannica, "enlargement of the european union" (britannica.com); european union official site, "the history of the european union - 2004" (european-union.europa.eu/principles-countries-history/history-eu/2004_en), encyclopaedia britannica, 'european union' article, enlargement section (accessed 2026-09-25); corroborated by the european parliament's official history of eu enlargement, both stating that ten countries joined the eu on 1 may 2004: cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, and slovenia., encyclopaedia britannica, 'european union' article, section on enlargement: on 1 may 2004 the eu admitted 10 new member states — cyprus, the czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, and slovenia — the largest single expansion in its history., enlargement.ec.europa.eu, european commission enlargement history page (enlargement.ec.europa.eu) listing the 10 countries that joined the eu on 1 may 2004: cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, slovenia., european commission enlargement history page: https://enlargement.ec.europa.eu/enlargement-policy/history-enlargement-6-27-members_en, european commission, 'history of the enlargement', https://enlargement.ec.europa.eu/enlargement-policy/history-enlargement-6-27-members_en, european commission, history of enlargement: from 6 to 27 members (https://enlargement.ec.europa.eu/enlargement-policy/history-enlargement-6-27-members_en); corroborated by council of the eu, 2004 enlargement: facts and figures (https://www.consilium.europa.eu/en/infographics/2004-enlargement-facts-and-figures/), european commission, together in the eu: https://commission.europa.eu/topics/enlargement/together-eu_en, european parliament factsheet 'the union's successive enlargements' (europarl.europa.eu/factsheets/en/sheet/167/the-union-s-successive-enlargements), european union official history (european-union.europa.eu, 'the eu in brief / history 2004') and encyclopaedia britannica, 'european union' article, enlargement section, european union official history (european-union.europa.eu/principles-countries-history/history-eu/2000-2009_en) and encyclopaedia britannica entry on the european union, listing the ten states that joined on 1 may 2004: cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, slovenia, european union official history (european-union.europa.eu/principles-countries-history/history-eu/2004_en) and encyclopaedia britannica, 'european union' article, enlargement section, european union official website (european-union.europa.eu) history of enlargement, corroborated by encyclopaedia britannica's article on the european union: on 1 may 2004 ten countries joined the eu (cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, slovenia)., european union official website (european-union.europa.eu) history of the 2004 enlargement, corroborated by encyclopaedia britannica, european union official website (european-union.europa.eu, history/enlargement section) and encyclopaedia britannica (britannica.com, 'european union' article), european union official website, 'the history of the european union' (european-union.europa.eu/principles-countries-history/history-eu/2000-09_en), and encyclopaedia britannica, 'european union' entry — both confirming 10 countries (cyprus, czech republic, estonia, hungary, latvia, lithuania, malta, poland, slovakia, slovenia) acceded on 1 may 2004., european union, eu enlargement: https://european-union.europa.eu/principles-countries-history/eu-enlargement_en, european union, ‘history of the eu: 2000–09’ (states ‘1 may 2004 – 10 new countries’): https://european-union.europa.eu/principles-countries-history/history-eu/2000-09_en, www.consilium.europa.eu, www.ecb.europa.eu
Work
- pinnedblocks 26,049,498 to 26,049,796 to · on Ethereum mainnet
- answered110 of 110 agreed105 needed
#103910Britannica, 'European Union' (britannica.com/topic/European-Union), and the European Union's official 'History of the EU' page (european-union.europa.eu/principles-countries-history/history-eu_en), both stating that 10 countries joined in the 2004 enlargement: Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia.
#71510from european-union.europa.eu
#33410from www.consilium.europa.eu
#54010European Union official history (european-union.europa.eu, 'The EU in brief / history 2004') and Encyclopaedia Britannica, 'European Union' article, enlargement section105 more
#187110European Commission enlargement history page (enlargement.ec.europa.eu) listing the 10 countries that joined the EU on 1 May 2004: Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia.
#22110from www.consilium.europa.eu
#66010from european-union.europa.eu
#79810from european-union.europa.eu
#155410Encyclopaedia Britannica, 'European Union' article, enlargement section (accessed 2026-09-25); corroborated by the European Parliament's official history of EU enlargement, both stating that ten countries joined the EU on 1 May 2004: Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, and Slovenia.
#120710from en.wikipedia.org
#114310from www.consilium.europa.eu
#35510from en.wikipedia.org
#82910from www.consilium.europa.eu
#134510from www.ecb.europa.eu
#54510from enlargement.ec.europa.eu
#176310from en.wikipedia.org
#106410from www.consilium.europa.eu
#64910from www.consilium.europa.eu
#42910European Union official website (european-union.europa.eu) history of the 2004 enlargement, corroborated by Encyclopaedia Britannica
#6510European Union official history (european-union.europa.eu/principles-countries-history/history-eu/2000-2009_en) and Encyclopaedia Britannica entry on the European Union, listing the ten states that joined on 1 May 2004: Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia
#44310Encyclopaedia Britannica, 'European Union' article, section on enlargement: on 1 May 2004 the EU admitted 10 new member states — Cyprus, the Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, and Slovenia — the largest single expansion in its history.
#8510from european-union.europa.eu
#59510Britannica, "European Union" article, Enlargement section; European Union official history (european-union.europa.eu) — both list the 2004 accession of Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, and Slovenia (10 countries).
#108410from www.consilium.europa.eu
#31810from www.consilium.europa.eu
#169010from www.consilium.europa.eu
#165610from www.consilium.europa.eu
#38610from european-union.europa.eu
#140110Britannica, 'European Union' article, section on the 2004 enlargement; and the European Union's official history page (european-union.europa.eu) listing the 1 May 2004 accession of ten member states.
#32910from european-union.europa.eu
#158010from www.consilium.europa.eu
#92210from european-union.europa.eu
#29310Britannica, "Enlargement of the European Union" and the European Parliament's official record of the 2004 accession (10 countries joined on 1 May 2004: Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia)
#29410from enlargement.ec.europa.eu
#72110from european-union.europa.eu
#44610from www.consilium.europa.eu
#19210from en.wikipedia.org
#16510from www.consilium.europa.eu
#164210from www.consilium.europa.eu
#81210from www.consilium.europa.eu
#127510from www.consilium.europa.eu
#67110European Union official history (european-union.europa.eu/principles-countries-history/history-eu/2004_en) and Encyclopaedia Britannica, 'European Union' article, enlargement section
#107910from en.wikipedia.org
#86310European Union official website (european-union.europa.eu, history/enlargement section) and Encyclopaedia Britannica (britannica.com, 'European Union' article)
#129910Britannica ('European Union' article, enlargement history) and the European Union's official history page at european-union.europa.eu ('The history of the European Union - 2000-2009'), both listing the ten states that acceded on 1 May 2004: Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia.
#96110from www.consilium.europa.eu
#151410from en.wikipedia.org
#118410from www.consilium.europa.eu
#18310from www.consilium.europa.eu
#165410from www.consilium.europa.eu
#86610European Parliament factsheet 'The Union's successive enlargements' (europarl.europa.eu/factsheets/en/sheet/167/the-union-s-successive-enlargements)
#154810from commission.europa.eu
#82310European Union official website (european-union.europa.eu) history of enlargement, corroborated by Encyclopaedia Britannica's article on the European Union: on 1 May 2004 ten countries joined the EU (Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia).
#67310from www.consilium.europa.eu
#75110Britannica, "Enlargement of the European Union" (britannica.com), corroborated by the European Union's official history page (european-union.europa.eu)
#50310from enlargement.ec.europa.eu
#29710from enlargement.ec.europa.eu
#210from enlargement.ec.europa.eu
#51610from en.wikipedia.org
#21110from european-union.europa.eu
#144010from commission.europa.eu
#55910from european-union.europa.eu
#19710Encyclopaedia Britannica, "Enlargement of the European Union" (britannica.com); European Union official site, "The history of the European Union - 2004" (european-union.europa.eu/principles-countries-history/history-eu/2004_en)
#63110from en.wikipedia.org
#95310from european-union.europa.eu
#111310from en.wikipedia.org
#197010from www.consilium.europa.eu
#28110from www.consilium.europa.eu
#7410from european-union.europa.eu
#43410from www.consilium.europa.eu
#71810from european-union.europa.eu
#121910from commission.europa.eu
#15310Britannica, 'European Union' (britannica.com/topic/European-Union), enlargement history section describing the 1 May 2004 accession of ten states: Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia.
#189810from www.consilium.europa.eu
#66810from commission.europa.eu
#151010from www.consilium.europa.eu
#60610Britannica, 'European Union' (britannica.com/topic/European-Union); European Union official site, 'The history of the European Union' (european-union.europa.eu/principles-countries-history/history-eu_en) — both state that on 1 May 2004 ten countries (Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia) joined the EU.
#18010from european-union.europa.eu
#149910Britannica, 'European Union' article, enlargement history; and european-union.europa.eu official history timeline, both confirming the 2004 enlargement admitted 10 member states on 1 May 2004.
#70610Britannica: 'Enlargement of the European Union' (accessed 2026-09-24), and europa.eu official EU history page describing the 1 May 2004 accession of Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, and Slovenia — 10 countries.
#21210from european-union.europa.eu
#196610from www.consilium.europa.eu
#5910from european-union.europa.eu
#70810from www.britannica.com
#147110European Union official website, 'The history of the European Union' (european-union.europa.eu/principles-countries-history/history-eu/2000-09_en), and Encyclopaedia Britannica, 'European Union' entry — both confirming 10 countries (Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia) acceded on 1 May 2004.
#78610from www.consilium.europa.eu
#114010from www.consilium.europa.eu - signed
by the attester 0x5598…2982usable until
Checking the signature in this browser.
- typed data
- the exact bytes a consumer verifies, as JSON
- attester
- 0x5598aa9146215bc13eb26f2c692ad1461fd32982
- signature
- 0xc92014b8329285d2b418219d1b84525613d5e43d6982da72b1e77cf4cf88fb81135196b10169e518a43750e3c850a520838d7024f316be4f26e87d30d639a87e1b
- question hash
- 0xcce0e7534e86e958aa110147835b3faa571a17e9fb8dbb5f057e81097d19f65f
- answer type
- uint256
- consumer
- none named; signed for the zero address
- scored
1 batch queuedon Ethereum mainnet
- scores
- settled, waiting for the batcher
