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by ganarajpr 1307 days ago
I have heard that it was a victim of the 200 year famine that hit most parts of the world during 2000-1900 BCE timeframe. At the same time, the mega river that streamed through central India dried up completely adding insult to injury. This MAY be the cause of the collapse of civilization.

As far as I have seen, this is the best plausible explanation for the collapse - so far.