It reached the height of its power when it defeated Waldemar IV of Denmark and signed the favorable Treaty of Straslund.  
It reached the height of its power when it defeated Waldemar IV of Denmark and signed the favorable Treaty of Straslund.  It still met as late as 1669, but it had not been a major power for over a century.  It began in part to facilitate trade of salt and herring for Kiel and Lubeck, but a 1241 mutual defense pact between Lubeck and Hamburg is considered its true beginning.  Consisting of up to 160 members, FTP, name this powerful league which controlled trade in the Baltic and North Sea regions for centuries.
It reached the height of its power when it defeated Waldemar IV of Denmark and signed the favorable Treaty of Straslund.  
the Hanseatic League or Hansa