The patterns of unity and division that define Europe as a historical region have been discussed in many seminal works, but the complex set of questions behind its domains and divisions merits a more sustained debate. The disappearance of the cold war, the enlargement of the European Union, and core issues of historical sociology all require an exploration of the structures and boundaries of historical formations, as well as the question of European unity. This volume tackles the topic of the divisions that have shaped European history head-on, as leading scholars in the field negotiate such issues as regional identity, geographical boundaries, divisional labeling, and post–cold war European unity.