Question

Which are thought to have contributed to the decline of the Indus Valley civilization?
Choose all answers that are correct.
A. Centuries of floods made the soil salty and unfit for farming.
B. Volcanic eruptions covered the land with molten lava.
C. The surrounding land was severely deforested.
D. Diseases reduced the population.
E. Indus Valley populations migrated to Central Asia and Africa.

Answer 1

A,C,D