Augsburg, Peace of, 1555, temporary settlement within the Holy Roman Empire of the religious conflict arising from the Reformation. Each prince was to determine whether Lutheranism or Roman Catholicism was to prevail in his lands ( cuius regio, eius religio ). Dissenters were allowed to emigrate, and the free cities were obligated to allow both Catholics and Lutherans to practice their religions. Calvinists and others were ignored. Under a provision termed the ecclesiastic reservation, the archbishops, bishops, and abbots who had become Protestant after 1552 were to forfeit their offices and incomes.
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