It was one of the five Wendish towns whose alliance extorted from King Eric of Norway a favourable commercial treaty in 1284-1285; and in the 14th century it was second only to Lubeck in the Hanseatic League.
For this display of independence he was imprisoned at Reims, and not released till some three years later, when Napoleon had extorted terms from the captive pope at Fontainebleau.
Scarcely had he returned to Germany when the Lateran disavowed all that the pope had done, on the score that it had been extorted by force.
It had been extorted from the king by force (per vim et metum), and in the words of the bull the pope said "compositionem hujusmodi reprobamus penitus et damnamus."
Money must not be extorted from a ward when he receives his inheritance.