For 10 points, name this medieval German league of merchant cities.
It had outposts as far east as Novgorod and helped found such towns as Riga and Tallinn in the Baltic. Its successful naval campaign against King Waldemar IV culminated in the Treaty of Stralsund, which entitled it to fifteen percent of the profits from Danish trade. Developing as an extension of an alliance between Hamburg and Lubeck, this network had well over a hundred members and a strong trade monopoly until its collapse in the sixteenth century. For 10 points, name this medieval German league of merchant cities.
It had outposts as far east as Novgorod and helped found such towns as Riga and Tallinn in the Baltic.
{Hanseatic} League