Rooted in religion and based on a division of labor, the caste system, among other things, dictates the type of occupations a person can pursue and the social interactions that she may have. Castes are an aspect of Hindu religion. Other religions in India do not follow this system.
The name Pakistan literally means land of the pure in Urdu and Persian. It is a play on the word pÄk meaning pure in Persian and Pashto; the suffix -stÄn is a Persian word meaning place of, cognate with the Sanskrit word sthÄna (Devanagari: à¤¸à¥à¤¥à¤¾à¤¨ [stÌªÊ°aËnÉ]).
As one of the most populous countries in the world, Pakistan is also home to some of the world's megacities. Its most populous city, Karachi, is not only the largest in Pakistan but is also the 7th most populous city in the world, boasting a population that exceeds 11 millon people.