The Harappan civilization is the name given to the mature phase of the Indus Valley civilization, an ancient society that inhabited the Indus and Ghaggar-Hakra river valleys in what is now Pakistan and western India. Named after its city of Harappa, the civilization flourished from 2600 to 1900 BCE, developing a technologically advanced urban culture that was likely the result of efficient planning and a government that emphasized hygiene. What modern convenience first developed in its cities? Discuss