That seems impossible, though. An independent city such as that would need supply lines. Of course, this also depends on the location.
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Right, cuz the Greek city-states had such short lives.
Sarcasm aside, it's really not hard to set up something like this, it's just not really done legally when da gubment wants a cut and to control everything.
Well, yea, that's why I was saying that the location is crucial. Read about the history of Carthage and compare it to the Greek city-states.
We have better transport tech now. Also, a walked city these days, if it had access to good water, would be pretty easy to sustain itself.
