question:  What is a modern city that is large enough to be a city-state?
context: What cities in the post-Brexit era could learn from a 14th-century trading bloc As you fly from the country now known as Germany to Britain, the coastal geography of northern European cities gently unfurls. You can see where the sea smacks into them, or where yawning estuaries unfold like funnels between green and brown city and choppy blue water. By their nature cities along coasts and rivers developed so they could be open to trade with each other. From the middle of the 13th century, and for some 300 years after, many settlements dotted along this route formed the prosperous Hanseatic League, a European trading confederation of market towns, before the rise of the nation state led to its dissolution. It could point us towards new relationships between progressive city dwellers in a world that otherwise seems to be putting the brakes on modernity. The League is most easily understood as a loose federation of cities that acted together in self-interest to promote trade. The Hanseatic cities developed their own legal system, and their armies came to one another's aid. We think of nations today as elemental almost, immovable. Yet look at any city of Mitteleuropa and you'll see the many different names it has had as borders and regimes have shifted with the sands of time. "It is often said that great cities survived great empires," says Cristina Ampatzidou, editor-in-chief of the Rotterdam-based online publishing platform Amateur Cities. "So it is not unrealistic to think of cities as discrete entities that compete and collaborate with each other, independently from the states to which they belong." The League stretched from Novgorod in the east – in what is now Russia – to London in the west. Tallinn, Riga, Gdańsk, Visby, Berlin, Cologne, Antwerp, Stockholm, Bergen, Kiel, Rostock, Dinant, Bruges, Turku, Groningen, Hanover, Wroclaw, Kaliningrad: all were involved at different stages in the Hanse's history, which ran on into the 1500s.
output:  London
options:  Dublin  London  Trinidad  Glasgow