The Thirty Years War ended with which treaty?

The Peace of Westphalia ended the Thirty Years' War because it served as a comprehensive treaty that brought an end to the conflict and brought about significant political and religious changes in Europe. Signed in 1648, the treaty recognized the independence and sovereignty of various European states, marking a shift towards the modern nation-state system. It also promoted religious tolerance, allowing Protestantism to be practiced alongside Catholicism. The Peace of Westphalia established a framework for international diplomacy and defined the rights and responsibilities of states, making it a crucial milestone in European history.