KOLKATA/CALCUTTA — It’s an overnight train ride from Chattisagarh to India’s third biggest city Kolkata, a journey 17 year old Lakshmi Kumari makes once a year with her parents. They are among the estimated one and a quarter million poor Indians who work on Kolkata’s brick kilns, back-breaking seasonal work in 35-40 degrees heat. Asia’s third biggest economy after China and Japan, India’s two decades of around 8% annual growth has lifted tens, perhaps hundreds of millions of people out of poverty. The country’s middle class now numbers around 300 million, and some Indians are making their mark on the world economy. Last year 55 Indians made the Forbes’ list of the world’s billionaires, up from 23 in 2006. In 2008, Tata Motors bought Jaguar and Land Rover, a deal striking for its reverse-colonial symbolism, as an Indian company acquired 2 quintessentially-British brands.