Beginning of Essay
The earliest known Southern Asian civilization, flourishing c.2300- 1750 BC across 1.1 million km2 / ½ million mi.2 around the Indus in Pakistan. Over 100 sites have been identified with important urban centers at Mohenjo-daro and Harappa (Pakistan), and Kalibang ....

Middle of Essay
.... Indus civilization in a way that emphasized its cultural uniformity: notably burnt brick architecture and town layouts composed of distinct and physically separated citadel and residential quarters. At Harappa, exposed an impressive defensive wall, some 9 meters (30 feet) high and 14 meters (46 feet) wide at the base. The great walls of the citadel emerged for the first time in their majesty as picks cut through the blocking debris, The historical character of the Indus civilization was changing and developing. At Mohenjo-daro - better preserved than Harappa - the buildings of the citadel were erected on a massive mud brick platform 6 meters ....