There are few countries in the world capable to grap and shape the future of our world. To achieve this, a country must have a vey large population, a high GDP and a vast and modern army. This is a simple measure of power and influence, and by this three caracteristics, I appoint three countries too: USA, India and China.If USA is nowadays the most powerful country in the world, because it has the highest GDP and the best army in the world, China has de second highest GDP, the biggest army in soldiers, and the biggest population in the world. But USA's population will decrease in the next decades, as Chinese population too. Only Indian population will increase and like Simon Kuznets said once, the demographic factor is one of the most important factors to justify the economic growth in the world.
USA like China and India are investing a lot in innovation and entrepreneurishp policies, but besides USA are at the world's pole position in this field, China and India are catching up quickly the USA. So, not considering on the growth function the technical progress factor, we saw the population factor as the unique factor capable to justify the internal market dimension, the GDP performance and the army size. And by this analysis, India will be in this century the most powerful country in the world!


