When did reformation end and what event?

The Reformation is generally considered to have ended in the mid-17th century, particularly with the Peace of Westphalia in 1648, which concluded the Thirty Years' War in Europe. This peace treaty recognized the coexistence of Protestantism and Catholicism, marking a significant turning point in the religious landscape of Europe. The Reformation's legacy continued to influence religious and political dynamics, but the major conflicts and upheavals associated with it had largely subsided by this time.