Peace of Augsburg was a treatie signed between Charles V, the Diet of the Holy Roman Empire in Augsburg and the Schmalkaldic Leaguer ending the conflict between Roman Catholics and Lutherans in Germany which leadm to religion tolerance and made it possible for rulers of the Holy Roman Empire to choose between Lutheranism Protestantism or Catholicism as the official religion of their state or as their choice of belief.This peace agreement was sign in 1555 in city of Augsburg
The Edict of Nantes was a law promulgated at Nantes in Brittany which put a temporary end to religious wars and conflict between Roman Catholics and French Protestants which was signed in April 1598 by King Henry IV of France which grant French Protestants actual rights in the nation as thiern counterpart in order to encourage and promote religion and civil unity in the nation.
Peace of Westphalia was a series of peace treaties signed between May and October 1648 which aim to put an end to the years llong wars among the European (Eighty Years'War among Spain and the Dutch and the German) which brought about the recognition of the full territorial sovereignty of the member states and religion tolerance.
Each of the above treaties or agreement help to promote and strength secular belief among various nations
