The loose league of German-speaking trading towns that, for some four centuries without a king or a standing army of its own, dominated the key trade routes and privileges of the Baltic and North Sea, set the terms of northern Europe's trade, and showed how merchants alone could wield the power of a state.
It defeated a king without being a kingdom. In the 1360s a band of German trading towns, led by Lübeck, went to war against the king of Denmark and won, forcing him to grant them the commercial privileges they demanded. The towns had no shared ruler, no capital, no constitution, and no standing army. They had ships, money, and a shared interest in controlling the northern seas. This was the Hanseatic League, the merchant network that dominated the key Baltic and North Sea trade routes for roughly four hundred years. It was less a state than a club of cities that learned a king's lesson early: power follows whoever controls the flow of goods.