evidence: India is likely to be the world’s fastest-growing big economy this year [...] THE TRIALS and transformation of India’s economy have an epic quality, reminiscent of 19th-century America. A vast national market is being created, allowing firms to grow from economies of scale. Internal migration is shifting tens of millions of desperately poor people; a brash new consumer class is proliferating and empires are being built on new technologies. Tycoons unleashing vast investments are happy to debate if they are India’s Rockefeller or its Carnegie.