The Real Powerhouses That Drive the World’s Economy

When world leaders, economists, and pundits talk about global economic power, they usually talk about nation-states. That’s how we typically tally up economic power, rating and ranking nations on their gross domestic product. Today, economists and business analysts talk about when China will overtake the United States as world’s largest economy (based on at least one measure of purchasing power parity it already has).

But this obsession with nation-states does not fit the reality of today’s highly-clustered knowledge economy, centered in and around global cities. And, it’s not just individual cities and metropolitan areas that power the world economy. Increasingly, the real driving force is larger combinations of cities and metro areas called mega-regions.