Question

4. In one paragraph describe what you think happened to the Harappan Civilization. How could such a thriving society seemingly disappear?

Answer 1

Answer:

One theory suggested that a nomadic, Indo-European tribe, called the Aryans, invaded and conquered the Indus Valley Civilization. Many scholars now believe the collapse of the Indus Valley Civilization was caused by climate change.

there are other points as wwll which cant be explained just in one para but this point is the most important one.