Topic - Karachi

Karachi is the largest and most populous metropolitan city of Pakistan and its main seaport and financial centre, as well as the capital of Sindh province. The city has an estimated population of over 23.5 million people as of 2013, Karachi is the 3rd-largest city in the world by population within city limits, urban agglomeration in the world and the largest city in the Muslim world. It is Pakistan's centre of banking, industry, economic activity and trade and is home to Pakistan's largest corporations, including those involved in textiles, shipping, automotive industry, entertainment, the arts, fashion, advertising, publishing, software development and medical research. The city is a hub of higher education in South Asia and the Muslim world. - Source: Wikipedia