The Hanseatic League
Merchant towns around the Baltic and North Sea formed an association with no king, no capital, no standing army, and no constitution worth the name — just shared interests in fish, grain, timber, and cloth. The Hansa negotiated treaties, ran trading posts from London to Novgorod, and when Denmark interfered with its shipping, fought a war and won, extracting the right to veto the choice of Danish king. It was a corporation acting as a state two centuries before the Dutch made that a formal idea.
The path or medium of exchange moves, and a place or power rises or declines because it sits on or off the new route.