You can also refer to these as "external economies of scale". DC and politics/government seems like a clear pick. High Point, NC used to be one for furniture. [

You can also refer to these as "external economies of scale". DC and politics/government seems like a clear pick. High Point, NC used to be one for furniture. [1] Wasn't Michigan one for the automotive industry? I don't know that for sure, though. [1] https://en.wikipedia.org/wiki/High_Point,_North_Carolina#Evolution_of_furniture_industry https://en.wikipedia.org/wiki/High_Point,_North_Carolina#Evo...