Treaty of Nice

E160343

European Union treaty international agreement

The Treaty of Nice is a 2001 agreement that reformed the institutional structure of the European Union to prepare for its eastward enlargement.

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All labels observed (3)

Label	Occurrences
Treaty of Nice canonical	13
Nice Treaty 2001	2
Treaty of Nice amending the Treaty on European Union, the Treaties establishing the European Communities and certain related acts	1

How this entity was disambiguated

This entity first appeared as the object of triple T1349779 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Treaty of Nice
Context triple: [Treaty on European Union, amendedBy, Treaty of Nice]

A. Treaty of Lisbon
The Treaty of Lisbon is a 2007 agreement that reformed the European Union’s institutional structure and decision-making processes, enhancing its efficiency, democratic legitimacy, and coherence in external action.
B. Treaty of Rome
The Treaty of Rome is a 1957 international agreement that established the European Economic Community, laying a foundational step toward today’s European Union and its single market.
C. Treaty of Amsterdam
The Treaty of Amsterdam is a 1997 agreement that amended the founding treaties of the European Union, enhancing the powers of EU institutions, expanding cooperation in justice and home affairs, and preparing the Union for future enlargement.
D. Treaty of Seville
The Treaty of Seville was a 1729 agreement between Britain, France, and Spain that helped resolve disputes from the War of the Quadruple Alliance and temporarily stabilized European power relations.
E. Treaty on European Union
The Treaty on European Union, commonly known as the Maastricht Treaty, is the foundational agreement that created the modern European Union and introduced the framework for a single currency, common foreign and security policy, and closer political integration among its member states.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Treaty of Nice
Target entity description: The Treaty of Nice is a 2001 agreement that reformed the institutional structure of the European Union to prepare for its eastward enlargement.

A. Treaty of Lisbon
The Treaty of Lisbon is a 2007 agreement that reformed the European Union’s institutional structure and decision-making processes, enhancing its efficiency, democratic legitimacy, and coherence in external action.
B. Treaty of Rome
The Treaty of Rome is a 1957 international agreement that established the European Economic Community, laying a foundational step toward today’s European Union and its single market.
C. Treaty of Amsterdam
The Treaty of Amsterdam is a 1997 agreement that amended the founding treaties of the European Union, enhancing the powers of EU institutions, expanding cooperation in justice and home affairs, and preparing the Union for future enlargement.
D. Treaty of Seville
The Treaty of Seville was a 1729 agreement between Britain, France, and Spain that helped resolve disputes from the War of the Quadruple Alliance and temporarily stabilized European power relations.
E. Treaty on European Union
The Treaty on European Union, commonly known as the Maastricht Treaty, is the foundational agreement that created the modern European Union and introduced the framework for a single currency, common foreign and security policy, and closer political integration among its member states.
F. None of above. chosen

Statements (50)

Predicate	Object
instanceOf	European Union treaty ⓘ international agreement ⓘ
adoptedBy	Member States of the European Union ⓘ surface form: European Union member states
aimedTo	prepare the European Union for eastern enlargement ⓘ reform institutional structure of the European Union ⓘ
amends	Euratom Treaty ⓘ surface form: Treaty establishing the European Atomic Energy Community Treaty of Paris (1951) ⓘ surface form: Treaty establishing the European Coal and Steel Community Treaty of Rome ⓘ surface form: Treaty establishing the European Community Treaty on European Union ⓘ
appliesTo	European institutions ⓘ surface form: European Union institutions Member States of the European Union ⓘ surface form: European Union member states
category	2001 in the European Union ⓘ Treaties entered into force in 2003 ⓘ EU Treaties ⓘ surface form: Treaties of the European Union
concludedOn	2000-12-11 ⓘ
contains	declarations ⓘ protocols ⓘ
enteredIntoForceOn	2003-02-01 ⓘ
follows	Treaty of Amsterdam ⓘ
hasOfficialName	Treaty of Nice self-linksurface differs ⓘ surface form: Treaty of Nice amending the Treaty on European Union, the Treaties establishing the European Communities and certain related acts
hasParty	Belgium ⓘ France ⓘ Germany ⓘ Italy ⓘ Spain ⓘ
language	all official languages of the European Union ⓘ
legalBasisFor	certain institutional provisions of the European Union before the Treaty of Lisbon ⓘ
legalStatus	binding international treaty ⓘ
locationSigned	Nice, France ⓘ surface form: Nice, Alpes-Maritimes, France
negotiatedBy	governments of EU member states ⓘ
OJReference	OJ C 80, 10.3.2001 ⓘ
partOf	primary law of the European Union ⓘ
precedes	Treaty of Lisbon ⓘ
preparedFor	2004 enlargement of the European Union ⓘ accession of Central and Eastern European countries ⓘ
publishedIn	Official Journal of the European Union ⓘ surface form: Official Journal of the European Communities
relatesTo	European Union enlargement ⓘ institutional reform of the European Union ⓘ
shortName	Treaty of Nice self-link ⓘ
signedIn	Nice ⓘ
signedInCountry	France ⓘ
signedOn	2001-02-26 ⓘ
subject	composition of the European Commission ⓘ enhanced cooperation mechanisms ⓘ extension of qualified majority voting ⓘ number of seats in the European Parliament ⓘ reform of the Court of First Instance ⓘ reform of the Court of Justice of the European Communities ⓘ reweighting of votes in the Council of the European Union ⓘ
tookPlaceAt	Intergovernmental Conference ⓘ surface form: Intergovernmental Conference of 2000

How these facts were elicited

Referenced by (16)

Full triples — surface form annotated when it differs from this entity's canonical label.

Treaty on European Union → amendedBy → Treaty of Nice ⓘ

European integration → hasKeyEvent → Treaty of Nice ⓘ

this entity surface form: Nice Treaty 2001

Treaty of Rome → amendedBy → Treaty of Nice ⓘ

EU Treaties → amendedBy → Treaty of Nice ⓘ

Treaty of Lisbon → wasPrecededBy → Treaty of Nice ⓘ

Treaties of the United Kingdom → hasPart → Treaty of Nice ⓘ

this entity surface form: Nice Treaty 2001

Treaty of Amsterdam → followedBy → Treaty of Nice ⓘ

Treaties of France → hasPart → Treaty of Nice ⓘ

Common Foreign and Security Policy → reformedByTreaty → Treaty of Nice ⓘ

Treaty of Nice → hasOfficialName → Treaty of Nice self-linksurface differs ⓘ

this entity surface form: Treaty of Nice amending the Treaty on European Union, the Treaties establishing the European Communities and certain related acts

Treaty of Nice → shortName → Treaty of Nice self-link ⓘ

Article 1 TEU → wasAmendedBy → Treaty of Nice ⓘ

Amsterdam Treaty → precedes → Treaty of Nice ⓘ

Maastricht Treaty 1992 → laterAmendedBy → Treaty of Nice ⓘ

subject surface form: Maastricht Treaty

Treaties of Belgium → hasPart → Treaty of Nice ⓘ

Statute of the European Investment Bank → amendedBy → Treaty of Nice ⓘ

All labels observed (3)

How this entity was disambiguated Show

Statements (50)

How these facts were elicited Show

Referenced by (16)

How this entity was disambiguated

How these facts were elicited