Karachi is the capital of the Pakistani province of Sindh . It is the most populous city in Pakistan, and fifth-most-populous city proper in the world. Ranked as a beta world city , the city is Pakistan's premier industrial and financial centre and is considered as the cultural, economic, philanthropic, educational, and political hub of the country. Karachi is also Pakistan's most cosmopolitan city. Situated 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 the Pakistan's busiest airport, Jinnah International Airport . Though the Karachi region has been inhabited for millennia,the city was founded as the fortified village of Kolachi in 1729.The settlement drastically increased in importance with the arrival of British East India Company in the mid 19th century...