WORLD CIVILIZATION

Detailed explanation-1: -Indus civilization, also called Indus valley civilization or Harappan civilization, the earliest known urban culture of the Indian subcontinent. The nuclear dates of the civilization appear to be about 2500–1700 bce, though the southern sites may have lasted later into the 2nd millennium bce.

Detailed explanation-2: -96 sites have been excavated, mostly in the region of the Indus and Ghaggar-Hakra Rivers and their tributaries. Among the settlements were the most important urban centres of Harappa, Mohenjodaro, Ganeriwala, Dholavira, and Rakhigarhi.

Detailed explanation-3: -The correct answer is The port cities are Mohenjodaro and Harappa.

Detailed explanation-4: -The correct answer is Patliputra.