One theory is by the first excavators, which is that because the Indus Valley Civilization was not warlike society, it was ended by the Aryan invasion.
The ancient inhabitants of the Indus Valley, the earliest known civilization of India had a culture that stretched from Western India to Afghanistan, the oldest civilization known India-is plenty impressive and apparently sanitary bronze-age. It is disconcerting to his abrupt fall. They had an advanced culture with a sanitary sewer drain very sophisticated and well built bathrooms. To date there is no archaeological evidence of armies, slaves, conflicts, or other aspects of the ancient societies. Nobody knows where this civilization went.
The Indus River Valley Civilizations
The ancient Indus Valley people, India’s oldest known civilization had a culture that stretched from Western India to Afghanistan and a populace of over 5 million. le—India’s oldest known civilization—were an impressive and apparently sanitary bronze-age bunch. The scale of their baffling and abrupt collapse rivals that of the great Mayan decline. They were a hygienically advanced culture with a highly sophisticated sewage drainage system, and immaculately constructed baths. There is to date no archaeological evidence of armies, slaves, conflicts, or other aspects of ancient societies. No one knows where this civilization went.