57 Disappearance of the Indus Valley Civilization
Learning Objective
- Discuss the causes for the disappearance of the Indus Valley Civilization
Key Points
- One theory suggested that a nomadic, Indo-European tribe, called the Aryans, invaded and conquered the Indus Valley Civilization.
- Many scholars now believe the collapse of the Indus Valley Civilization was caused by climate change.
- The eastward shift of monsoons may have reduced the water supply, forcing the Harappans of the Indus River Valley to migrate and establish smaller villages and isolated farms.
- These small communities could not produce the agricultural surpluses needed to support cities, which where then abandoned.
Terms
Indo-Aryan Migration theory
A theory suggesting the Harappan culture of the Indus River Valley was assimilated during a migration of the Aryan people into northwest India.
monsoon
Seasonal changes in atmospheric circulation and precipitation; usually winds that bring heavy rain once a year.
Aryans
A nomadic, Indo-European tribe called the Aryans suddenly overwhelmed and conquered the Indus Valley Civilization.
The great Indus Valley Civilization, located in modern-day India and Pakistan, began to decline around 1800 BCE. The civilization eventually disappeared along with its two great cities, Mohenjo daro and Harappa. Harappa lends its name to the Indus Valley people because it was the civilization’s first city to be discovered by modern archaeologists.
Archaeological evidence indicates that trade with Mesopotamia, located largely in modern Iraq, seemed to have ended. The advanced drainage system and baths of the great cities were built over or blocked. Writing began to disappear and the standardized weights and measures used for trade and taxation fell out of use.
Scholars have put forth differing theories to explain the disappearance of the Harappans, including an Aryan Invasion and climate change marked by overwhelming monsoons.
The Aryan Invasion Theory (c. 1800-1500 BC)
The Indus Valley Civilization may have met its demise due to invasion. According to one theory by British archaeologist Mortimer Wheeler, a nomadic, Indo-European tribe, called the Aryans, suddenly overwhelmed and conquered the Indus River Valley.
Wheeler, who was Director-General of the Archaeological Survey of India from 1944 to 1948, posited that many unburied corpses found in the top levels of the Mohenjo-daro archaeological site were victims of war. The theory suggested that by using horses and more advanced weapons against the peaceful Harappan people, the Aryans may have easily defeated them.
Yet shortly after Wheeler proposed his theory, other scholars dismissed it by explaining that the skeletons were not victims of invasion massacres, but rather the remains of hasty burials. Wheeler himself eventually admitted that the theory could not be proven and the skeletons indicated only a final phase of human occupation, with the decay of the city structures likely a result of it becomin