Kolkata (14,850,000) is the capital of the Indian state of West Bengal. It is the prime business, commercial, and financial hub of eastern India and the main port of communication for the North-East Indian states, as well as having the third-largest urban economy of India.
Kolkata is the seventh-most populous city in India, with a population of over 4.5 million residents within the city limits, and a population of over 14.85 million residents in the larger Kolkata Metropolitan Area, making it the third-most populous metropolitan area in India.
The Port of Kolkata is India's oldest operating port and its sole major riverine port. Kolkata is known as the "cultural capital of India" for the city's historical and architectural significance.
Kolkata is a Gamma + city according to the Globalization and World Cities Research Network (GaWC) which evaluates and ranks the relationships between world cities in the context of globalisation.
Gamma level cities are cities that link smaller economic regions into the world economy.
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