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University Library, University of Illinois at Urbana-Champaign

European Union Enlargement: Home

This topical guide explores the history and process of accession, enlargement, and integration to the European Union.


This guide provides resources related to the enlargement of the European Union throughout its history, including organizations that preceded the current Union, as well as information related to potential future growth.

If you are looking for more general information about the European Union and European Studies at the University, please refer to the European Union and European Studies LibGuide. Additionally, this guide only covers additions to the European Union and organizations that preceded it. If you are interested in Brexit, please refer to the LibGuide on Brexit.

EU Enlargement Policy

Web Resources

Map of the European Union

map of Europe with EU member states highlighted in various colors

Image Credit:

Introductory Books on the European Union


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