China isn't the world's most ferocious new economic competitor the exploding east-coast corridor, from Beijing to Shanghai, is. India as a whole is not developing high-tech industries and attracting jobs, but the booming mega-region stretching from Bangalore to Hyderabad is. Across the world, in fact, nations don't spur growth so much as dynamic regions modern versions of the original "megalopolis," a term coined by the geographer Jean Gottman to identify the sprawling Boston-New York-Washington economic power corridor in the United States