The culture of religious peace in the history of Europe, dealing constructively with religious and denominational plurality is a task that is not just emerging in the present. Rather, it has accompanied the history of Europe from the beginning. The emergence of religious peace regulations from the 16th century onwards was trend-setting for all modern developments. They represent an essential building block for the constitution of the modern European state. At the same time they allow deep insights into the handling of religious coexistence as well as the development of the idea of tolerance and enable one to understand today's religious plurality and to deal with it appropriately. The series offers selected writings, a long-term project of the Academy of Sciences and Literature in Mainz,which for the first time brings together the European religious peace regulations in the period from 1485 (Kuttenberg state parliament approval) to 1791 (Constitution Française) and makes them digitally usable in Open Access. --