By mid-century more than 400 million Indians will have moved from villages to cities, in one of the largest ever human migrations, while New Delhi and Mumbai are projected to become the world’s two largest cities, with fifty million residents apiece.33 Today, India’s $2.3 trillion economy is slightly smaller than Britain’s.34 Barring something unforeseen it will surpass America in size by mid-century, and then, perhaps, China too.
