Mumbai (also known as Bombay) is the capital city of the Indian state of Maharashtra. It is the most populous city in India with an estimated city proper population of 12.4 million as of 2011. Along with the neighboring regions of the Mumbai Metropolitan Region, it is the second most populous metropolitan area in India, with a population of 21.3 million as of 2016.

Mumbai lies on the Konkan coast on the west coast of India and has a deep natural harbor. In 2008, Mumbai was named an alpha world city.

The seven islands that constitute Mumbai were originally home to communities of Koli people, who originated in Gujarat in prehistoric times.

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