Which event is marked by the Peace of Augsburg?

The Peace of Augsburg, signed in 1555, was a significant treaty that aimed to resolve religious tensions in the Holy Roman Empire, particularly between Catholic and Protestant states. It established the principle of "cuius regio, eius religio," which allowed each prince to determine the religion of their own territory, thereby providing a degree of religious autonomy. This agreement marked a crucial moment in the Protestant Reformation, as it recognized Lutheranism alongside Catholicism, thus helping to stabilize the political landscape in Germany by allowing for a formalized coexistence of the two faiths among German princes. This event set a precedent for religious tolerance within the empire, at least at the level of state governance, and was an important step in the evolution of religious freedom in Europe.