Thirty-years-war Today

It established the "Westphalian System," the idea that a nation has exclusive rights over its own territory and domestic affairs (including religion).

The Swedish King Gustavus Adolphus, the "Father of Modern Warfare," changed the tide. He integrated infantry, cavalry, and mobile artillery, securing a massive victory at Breitenfeld (1361) that saved the Protestant cause from total collapse. 5. The Legacy: Peace of Westphalia (1648) thirty-years-war

The Peace of Augsburg was reaffirmed and expanded to include Calvinism, effectively ending the era of large-scale religious wars in Europe. It established the "Westphalian System," the idea that

More people died from typhus and plague—spread by marching armies—than from actual combat. 4. The Turning Point: Gustavus Adolphus It established the "Westphalian System

Some regions of Germany lost over 50% of their population .

Spain and the Holy Roman Empire fought to maintain Catholic dominance and imperial unity.