History Optional Paper-1 Solution – 2015: Q.2 (b)

History Optional Paper-1 Solution – 2015: Q.2 (b)

Q.2(b) The decline of Harappan civilization was caused by ecological degradation rather than external invasion. Discuss.


Aryan Invasion Theory

The idea that the civilization was destroyed by the Aryan invaders was put forward by Ramprasad Chanda  in 1926.It was later elaborated by Mortimer Wheeler in 1947.

This idea was supported by the references in the Rig veda to various kind of forts,attacks on walled cities,and the epithet  Purandara (destroyer of forts) given to the god Indra. He also identified a place called Hariyupiya in the Rig Veda with Harappa, where Aryan fought the battle.
It has been pointed out that in the late phases of occupation at Mohenjodaro there are evidences of a massacre. Human skeletons have been found lying on the streets.

Problems with Aryan invasion theory

(1) The evidence from the Rig Veda is far from conclusive. There are no archaeological records to support this theory. There is, in fact, no evidence of any kind of military assault or conflict at any Harappan site.
The human bodies lying exposed in the street could have been caused by raids of bandits from surrounding hilly tracks.

(2) The provisional date for the decline of the Harappan civilization is believed to be 1800 B.C. The Aryans on the other hand are believed to have arrived  here not earlier than a period around 1500 B.C. So, the Harappans and the Aryans are unlikely to have met each other.

The later research  has shown that the dates as well as the pace of decline varied from site to site. The decline in Mohenjodaro had set in by 2200 BCE but the civilization continued at many places till 1800 BCE. While Mohenjodaro and Dholavira give a picture of gradual decline ,at Kalibangan and Banawali ,the city life ended all of sudden.

Ecological degradation theory

(1) Scholars like Fairservis tried to explian the decay of the Harappan civilization in terms of the problems of ecology.
According to him, the delicaye ecological balance of the semi-arid areas was being disturbed because the human and caytle population was fast depleting the scanty forests, food and fuel resources. The combined needs of the Harappan townsmen, peasants and pastoralists exceeded the limited production capacities of these areas. Thus, a growing population of men and animals comfronted by scanty resources wore out the landscape.

With forests amd grass cover gradually disappearing, there were more floods and droughts. This depletion of the subsistence base caused strain on the entire economy pf the civilization. There seems to have been a gradual movement away to areas which offered better sussistence possibilities. That is why the Harappan communities moved towards Gujarat and the eastern areas, away from the Indus.
Though there are some concerns in this theory (for example: the enduring fertility of soils of the I dian sub-continent over the subsequent millennia disaproves the hypothesis of soil exhaustion), but still it explains the decline in the best way.

(2) The Rise and fall of the harappan civilization is also explained by the Monsoon Link Theory of 2012.It is presented by Ronojoy Adhikari, Liviu Giosan and others.According to this theory it is the climate change which is responsible for the decline of the harappan civilization.
According to this theory, around 4000 BCE there existed extreme monsoon climate which was not favourable for the rise of  civilization but with the weakening of the monsoon, the climate became favourable for the rise of the mighty harappan civilization and with the further weakening of the monsoon, the climate became again unfavourable which led to the decline of the civilization. The example of this further weakening is the disappearance of the Saraswati river was rainfed not Glacier fed.
This theory is based on the latest archaeological evidence and research and best explains the decline of the Harappan civilization on the basis of the ecological degradation rather than the Aryan Invasion.

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