South Asia is undergoing a rapid economic transformation and has the potential to become the next major middle-income region of the world. More than a million young people are reaching working age every month, and the population of the region's mega agglomerations and sprawling cities is expanding at roughly the same pace. By 2030 more than a quarter of the world's working adults will live in South Asia. But the region has not been particularly successful in integrating within itself and with the global economy. The demographic transition and urbanization on the one hand, and poor...