Topic - Mumbai

(also known as Bombay) is the capital city of the Indian state of Maharashtra. It is the most populous city in India, second most populous metropolitan area in India, and the fifth most populous city in the world, with an estimated city population of 18.4 million and metropolitan area population of 20.7 million as of 2011. Along with the neighbouring urban areas, including the cities of Navi Mumbai and Thane, it is one of the most populous urban regions in the world. Mumbai lies on the west coast of India and has a deep natural harbour. In 2009, Mumbai was named an alpha world city. and has the highest GDP of any city in South, West or Central Asia. - Source: Wikipedia