WORLD CIVILIZATION

Detailed explanation-1: -Cities featured a fortified area called a citadel, which contained the major buildings of the city and included military structures. For instance, in Harappa, a citadel provided protection for the royal family and also served as a temple. The Citadel was surrounded by a huge brick wall.

Detailed explanation-2: -For protection from seasonal floods and polluted waters, the settlements were built on giant platforms and elevated grounds. Upon these foundations, networks of streets were laid out in neat patterns of straight lines and right angles.

Detailed explanation-3: -Since the Harappan people lived near the Indus River, the possibility of flooding was a major concern. To protect their cities from floodwaters, the Harappan people built their cities on high ground, and in lower areas of the city, buildings and other structures were raised on platforms.

Detailed explanation-4: -Answer and Explanation: The Citadel is a large, man-made mound at the archaeological site of Mohenjo-daro. The mound is built out of bricks and is located in the western part of the city. The mound is over 39 feet in height with a built-in staircase and on the top, buildings were placed.