Karachi is the capital of the Pakistani province of Sindh. It is the largest city in Pakistan and seventh largest city proper in the world. Ranked as a beta-global city, the city is Pakistan's premier industrial and financial centre, with an estimated GDP of $114 billion as of 2014. Karachi is Pakistan's most cosmopolitan city, its most linguistically, ethnically, and religiously diverse city, as well as one of Pakistan's most secular and socially liberal cities. With its location on the Arabian Sea, Karachi serves as a transport hub, and is home to Pakistan's two largest seaports, the Port of Karachi and Port Bin Qasim, as well as Pakistan's busiest airport, Jinnah International Airport.
Karachi is a Beta 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.
Beta level cities are cities that link moderate economic regions to the world economy.
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