In the aftermath of war against a united front of German Protestant
princes combined with Henry II of France, Charles V signs the
Treaty of Passau with the princes of the Protestant alliance. By
its terms, the imprisoned John Frederick of Saxony and Philip of
Hesse regain their freedom. Charles is forced to give up his
cherished ideal of European religious unity, annulling the Augsburg
Interim of 1548, and instead allowing Lutherans to practise their
religion freely in Germany. He proimses to call a diet to make a
permanent settlement.
Citation:
Editors. "Treaty of Passau annuls the Augsburg Interim and allows Lutheranism".
The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14840, accessed 24 May 2013.]