Final answer:
The decline of the Harappan Civilization was influenced by geological, climatic, and environmental factors, leading to urban decay and a shift to rural living.
Explanation:
The main reasons for the decline of the Harappan Civilization include geologic, climatic, and environmental factors. Possible causes are earthquakes and flooding due to tectonic plate movements, deforestation leading to unsuitable farming conditions, and reduced rainfall impacting the food supply. As a result, urban areas dwindled, and the civilization reverted to rural settings.
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