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Drying up of the Saraswati River, a process which had begun around 1900 BCE, was the main cause. Other experts speak of a great flood in the area. Either event would have had catastrophic effects on agricultural activity, making the economy no longer sustainable and breaking the civic order of the cities. Or might be a attack by foreign invaders.

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Wiki User

8y ago
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Wiki User

12y ago

It is thought that it ended because of large floods.

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Abraar Mohammed

Lvl 3
2y ago

yes

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