Over the last 25 years, India's explosive economic growth has vaulted it into the ranks of the world's emerging major powers. Long plagued by endemic poverty, until the 1990s the Indian economy was also hamstrung by a burdensome regulatory regime that limited its ability to compete on a global scale. Since then, however, the Indian government has gradually opened up the economy and the results have been stunning. India's middle class has grown by leaps and bounds, and the country's sheer scale-its huge population and $2 trillion economy-means its actions will have a major global impact. From world trade to climate change to democratization, India now matters.