What do you think might have contributed to the decline of Mohenjo-Daro?

Tectonic shift

Explanation:

Mohenjo-Daro was regarded as one of the most advanced early civilization in the world due to their ability to manage their agricultural sector.

Historians believed that somewhere in the past, a tectonic shift Blocked the lower pathway of the Indus Valley River. This blockage somehow prevented the people of Mohenjo-Daro from getting enough water supply for their agriculture. As a result, their economy started to declined and it eventually led to their downfall.

A Tectonic shift is what contributed to the decline of Mohenjo-Daro.

answer; cultural trait;

i believe your answer is mountains.