This work investigates how the political, social, and cultural developments of Europe throughout the twentieth century were shaped by transnational interactions rather than isolated national trajectories. Christoph Cornelissen, a historian specializing in European history, utilizes a comparative and transnational framework to analyze the continent's evolution. By synthesizing vast historical data, he argues that the interconnectedness of European states was the primary driver of the century's radical transformations, conflicts, and eventual integration.

Historians and scholars frequently cite this text as a rigorous, high-level synthesis of modern European development. It is widely regarded as a foundational resource for students and researchers seeking to understand the continent through a transnational lens rather than traditional national narratives.