War1618 CE – 1648 CEEurope

Thirty Years' War

A devastating religious and political conflict centered in the Holy Roman Empire that killed an estimated 4.5–8 million people, including 25–40% of the German-speaking population.

Key Figures
Ferdinand IIGustavus AdolphusCardinal RichelieuAlbrecht von Wallenstein

Historical Consequences

The Peace of Westphalia (1648) established the principle of state sovereignty and non-interference in domestic religious affairs, permanently weakened the Holy Roman Empire as a political entity, established France and Sweden as major European powers, and devastated the German-speaking lands for generations.

Treaty1648 CE

Peace of Westphalia

A series of peace treaties ending the Thirty Years' War, establishing the modern system of nation-states, state sovereignty, and non-interference in domestic affairs.

Cause-Effect Graph

Loading graph…