Which statements correctly summarize a current theory on why the Indus Valley civilization declined? Check all that apply.
Responses
Centuries of floods made the soil salty and unfit for farming.
Centuries of floods made the soil salty and unfit for farming.
The surrounding land was severely deforested.
The surrounding land was severely deforested.
Disease reduced the population.
Disease reduced the population.
A series of natural catastrophes occured.
The surrounding land was severely deforested.
Disease reduced the population.
A series of natural catastrophes occurred.