Snyder argues that early modern nationhood in the Commonwealth was based on political citizenship and shared noble status , rather than language or ethnicity.

Detailed accounts of massacres in Volhynia and Eastern Galicia, and forced migrations like Operation Vistula.

The Grand Duchy of Lithuania, the "Wilno Question," and Soviet-era Vilnius. Ukraine

The creation of the multiethnic Commonwealth.

A major theme is how Poland, after 1989, chose to reconcile with its neighbors by recognizing current borders and supporting their independence, effectively channeling national interest toward peace . Book Structure