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 million people. Karachi, city, and capital of Sindh province, southern Pakistan. It is the country’s largest city and principal seaport and is a major commercial and industrial center. Karachi is located on the coast of the Arabian Sea immediately northwest of the Indus River delta. The city has been variously called Caranjee, Krotchey, Currachee, and Kurrachee, all of which are believed to be variants of the same name. In the 18th century, it was known as Kalachi-jo-Goth, meaning “the village of Kalachi” (Kalachi being the name of an erstwhile head of the settlement).

Karachi Harbour, on the shores of which the city is situated, is a safe and beautiful natural harbor. It is protected from storms by Kiamāri Island, Manora Island, and Oyster Rocks, which together block the greater part of the harbor entrance in the west.

A low-lying coastal strip runs along the shore of the harbor. Away from the coast, the ground rises gently to the north and east to form a large plain, from 5 to 120 feet (1.5 to 37 meters) above sea level, on which the city of Karachi is built. The Malīr River, a seasonal stream, passes through the eastern part of the city, and the Layāri River, also seasonal, runs through the most densely populated northern section.

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