Question

What contributed to the decline of the Indus Valley civilization?

Select all correct answers.


The Indus River and its tributaries changed course.


The soil became too salty for crops to grow.


People moved to more fertile regions of the subcontinent.


Major sandstorms blanketed the cities, forcing people to leave.


Cities were destroyed by raging fires.

Answer 1

Explanation:

Frequency of floods- Robert L. Raikes proposed this theory about the cause of decline of harappan civilization. Not much evidence is available regarding flooding theory besides slumping brick masonry found in some harappan sites.

Foreign invasions- Sir Mortimer Wheeler proposed this Foreign invasion theory. Geological and archaeological proof of genocide and unburied skeletal remains found in harappan sites like Mohenjo-Daro.

Onset of the drought conditions- Change of course of Indus river would have caused water scarcity and have made many harappans to move out of harappan sites is one of the theory proposed for the decline of harappans. But, not enough evidences are given to accept this theory.

Answer 2

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• The soil became too salty for crops to grow.
• People moved to more fertile regions of the subcontinent.

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