Question

We are not sure about what caused the end of the Harappan civilization.
True
False

Answer 1

Hint:
Harappans are believed to have used Indus Script, a language consisting of symbols. The Harappan civilization was located in Indus valley.

Complete answer:
The Aryan Invasion theory is not accepted by many scholars. They say climate change is the main cause of the sudden downturn. The ruin of the Harappan civilization may have been attributed to tremendous climate change or natural calamities. Such climate change has contributed to flooding in the plains and towns.
Such climate change has contributed to flooding in the plains and towns. It is said that this civilization has come to an abrupt end. For its sudden end, the following explanations are presented: The neighboring desert invaded the fertile region and made it infertile. People were killed by Aryan invaders and the Indus Valley Civilization was ruined.
End of the Indus. Between 1900 and 1800 BCE, the Indus Valley civilization started to decline. The majority of towns have vanished or been abandoned. Archaeologists do not know why the Indus civilization, also known as the Indus valley civilization or Harappan civilization, the earliest known urban society of the Indian subcontinent, existed. The civilization was first identified in 1921 at Harappa in the Punjab region and then in 1922 at Mohenjo-daro.

In dockyards, granaries, warehouses, brick platforms, and defensive walls, Harappans displayed advanced architecture. The ancient Indus sewage and drainage systems built and used in cities throughout the region were much more advanced than those found in the Middle East's contemporary urban sites, and far more effective than they are today in many areas of Pakistan and India.

Therefore the answer is True

Note:
Harappans developed new techniques in the science of working with copper, bronze, lead, and tin. Rai Bahadur Daya Ram Sahni discovered Harappan Civilization. The Indo-European migrants from Iran, the Aryans, possibly ruined the civilization of the Indus valley.