Chart: Will NATO Expand North? | Statista
Member state of the European Union - Wikipedia
Which country should join the European Union next? - Debating Europe
Timeline of the UK in the EU – What UK Thinks: EU
Enlargement of the European Union - Wikipedia
European Union membership: How countries join, and more | Pew Research Center
How new member states join the EU: all you need to know - UK in a changing Europe
Factbox: Slow progress in Balkan countries' bids to join EU | Reuters
What the Fading Promise of EU Accession Means for the Balkans
How does EU accession work? – DW – 06/24/2022
European Community | European economic association | Britannica
EU Countries - The Member States of the European Union
What Countries Will Join The European Union Soon? - Answers
Industry concerned over increasing fragmentation of Internal Market due to different packaging rules
EU accession – DW – 04/17/2013
Enlargement of the European Union - Wikipedia
Reimagining U.S. Policy toward the Western Balkans | Center for Strategic and International Studies
40 years of EU enlargement - Who has joined the EU so far?
BBC News | EUROPE | EU avoids enlargement date
List of European Union member states by accession
Lining up for EU Membership: current candidate countries and potential candidates | by European Court of Auditors | Medium
The race for EU membership – POLITICO
Turkey's 10 years of EU accession negotiations: no end in sight - Elcano Royal Institute
Accession of Kosovo to the European Union - Wikiwand
![EU Member States By Date of Accession [OC][4592x3196] | Eu member states, Europe map, Map](https://i.pinimg.com/736x/e7/ef/81/e7ef810c97734f4e829a34fcbfb37609.jpg "EU Member States By Date of Accession [OC][4592x3196] | Eu member states, Europe map, Map")