Why did the political after the thirty years of war?

The political landscape after the Thirty Years' War was significantly altered due to the Treaty of Westphalia in 1648, which marked the end of the conflict. This treaty established the principles of state sovereignty and non-interference, leading to a more decentralized political structure in Europe. Additionally, it resulted in the recognition of various Protestant and Catholic states, effectively legitimizing religious pluralism. Consequently, these changes laid the groundwork for the modern nation-state system and shifted the balance of power across Europe.