Nations have long been considered the fundamental economic units of the world, but that distinction no longer holds true. Today, the natural units -and engines- of the global economy are megaregions, cities and suburbs in powerful conurbations, at times spanning national borders, forming vast swaths of trade, transport, innovation and talent.
Harvard Business Review : Forethought – A survey of ideas, trends, people and practices on the business horizon: Megaregions: the importance of place
