What happened that, within just one generation, Europe lost its leading role as the center of gravity of the international system, from a military, political, and economic perspective?

Which forces, movements, and leaders defined this trajectory from the zenith to the decline of European power? And which "Europe" can be referred to?

In what way was an attempt made to provide a unified identity and guidance to a geographical concept that, to this day, encompasses enormous political and cultural diversity?

How did the events unfold that led to two consecutive pan-European - global wars, the experience of which decisively marked the first stirrings of a common European consciousness?

And do the imperial yesterday and the nation-state of our time constitute landmarks towards a supranational tomorrow with security and prosperity?

These issues are sought to be illuminated by the pages of the book based on the questions and interpretations presented by contemporary Western historiography.