There is a lot of myths about that such leagues.
Iron...take your head out of your ass. Denying facts and real knowledge gets you only so far.
The Hanseatic leage needs no myths...its all well documented. For example the "Lübeck Law":
The models for the Danzig Law were the statute books of the Holy Roman Empire and of other Hanseatic cities, especially Lübeck. The merchant city received Lübeck law in 1226.
The Lübeck law (German: Lübisches (Stadt)Recht) was the constitution of a municipal form of government developed at Lübeck, now in Schleswig-Holstein, after it was made a free city in 1226.
The law provides for self-government. It replaced the personal rule of tribal monarchs descending from ancient times or the rule of the regional dukes and kings that had been established by Charlemagne. The latter held all of his aristocratic vassals personally responsible for the defence, health and welfare of the tribesmen settled on their estates, including the towns. The Lübeck Law in theory made the cities to which it applied independent of royalty.
Thats nearly 1000 years "german meddling" ffs!