HISTORY
ANCIENT CHINA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Natural Disasters
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Invasion by the Aryans
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Deadly Disease
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All of these are possible theories
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Detailed explanation-1: - 1] The Aryan theory of origin. 2] Theory of Dravidian origin. 3] Theory of Sumerian origin. 4] Theory of Indigenous origin.
Detailed explanation-2: -5 Theories On The Decline Of The Indus Valley Civilization.
Detailed explanation-3: -Around 2500 BCE, civilization in the Indus River Valley began to decline as people migrated eastward to the Himalayan foothills. Here, they shifted from a civilization composed of large cities to one of mostly small farming villages (map below). By 1800 BCE, most Harappan cities were almost completely abandoned.
Detailed explanation-4: -A Floods at regular intervals in Indus and its tributaries. B Attack from the Aryans. C Overuse of wood for burning bricks that destroyed the forests, which necessitated in their migration. D The spread of infectious diseases. There are many causes for the decline of Harappan civilisation.