Additionally , auxiliary industries in local services and trades evolve in such metropolitan areas , such as the production of wind turbines in the automotive industry of the greater Detroit and Cleveland areas .
Such agglomeration and diversity , unique to a metro , catalyzes growth .
Auxiliary industries in local services and trades evolve in such metropolitan areas , such as the production of wind turbines in the automotive industry of the greater Detroit and Cleveland areas .
Such agglomeration and diversity , unique to a metro , catalyzes growth .