Which 1648 peace settlement is commonly associated with ending the Thirty Years’ War in Europe?

The Peace of Westphalia is the 1648 peace settlement commonly associated with ending the Thirty Years’ War in Europe. It consisted chiefly of the treaties of Münster and Osnabrück, negotiated in Westphalia, a region of the Holy Roman Empire.

The agreements ended a destructive conflict that had begun in 1618 and expanded from a Bohemian and German religious struggle into a wider European war. France, Sweden, the Dutch Republic, Spain, and numerous German states were involved in the negotiations or their consequences. The settlement recognized important territorial and religious arrangements, including expanded rights for certain Christian denominations.

Historians debate how directly Westphalia created the modern principle of sovereign states. The treaties did not instantly produce a fully modern international system, and war continued between some parties. Nevertheless, “Westphalia” remains a useful term for discussing diplomacy, territorial authority, and the decline of universal claims by the Holy Roman Emperor and the papacy.