First published in 2001, this study deals with the fascinating relationship of Protestant churches to state and nation. This is shown in exegetical, historical and systematic analyses as well as case studies from different countries. It comes to the conclusion that Protestantism has a special role to play in the integration of Europe, precisely because of its diversity and roots in national and territorial identities. In times of Euroscepticism and growing nationalism, the study has only gained in relevance.