Question

why are there so many views about decline of the harappan civilisation​

Answer 1

Answer:

The destruction due to change in the course of river Ghaggar. In his Ancient India mentioned that the climatic, economic and political civilisation and argued that the decline was actually due to large-scale destruction. ... The Aryan invasion was believed to be major reason for the decline of Harappan Civilisation.

Answer 2

Many scholars believe that the collapse of the Indus Valley Civilization was caused by climate change. Some experts believe the drying of the Saraswati River, which began around 1900 BCE, was the main cause for climate change, while others conclude that a great flood struck the area.

Hope this helps.

Pls mark me the brainliest.