How did Margaret I reduce the Hanseatic League's power in Denmark?

Margaret I reduced the power of the Hanseatic League in Denmark through a combination of strategic diplomacy and the consolidation of royal authority.

In 1385, she successfully reclaimed economically vital strongholds on the west coast of Scandinavia that had previously been held by the League. By asserting her sovereignty and strengthening the central power of the monarchy, she compelled the organization to relinquish the castles and the tolls it had previously gathered on Danish territory.12

These actions were part of her broader efforts to curb the League's political dominance within her realms and to counter German expansion in the north. Her ability to maintain this authority against the superior economic power of the Hanseatic League was a hallmark of her reign and a key factor in the resurgence of Danish power during the late 14th century.12