Karachi Tops List of Cheapest Cities for Americans

Karachi, a sprawling city on the Indian Ocean with a population of about 18 million people, reigns as Pakistan's economic center and primary seaport. The international business hub, which hosts domestic companies as well as multinationals such as IBM (IBM), Chevron (CVX), and Abbott Laboratories (ABT), also happens to have the world's lowest cost of living for expatriates, according to a new survey by global human resources firm Mercer.

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