Thirty Years' War
Destructive Central European war that ended with the Peace of Westphalia and a changed imperial balance.
Historical overview
Overview adapted from a Wikipedia summary and stored locally on May 11, 2026.
The Thirty Years' War, fought primarily in Central Europe between 1618 and 1648, was one of the most destructive conflicts in European history. An estimated 4.5 to 8 million soldiers and civilians died from the effects of battle, famine, or disease, with parts of Germany reporting population declines of over 50%. Related conflicts include the Eighty Years' War, the War of the Mantuan Succession, the Franco-Spanish War, the Torstenson War, the Dutch–Portuguese War, and the Portuguese Restoration War.
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Border context
Confessional empires and Westphalia
The Holy Roman Empire, Habsburg Spain, the Ottoman frontier and Dutch independence wars define a fragmented early-modern map.
Borders are dynastic and imperial rather than nation-state based. The Westphalian settlement formalizes new state autonomy after 1648.