Concept
Version 8
Created by Boundless
Rise of the Gupta Empire
Iron Pillar of Delhi
The Iron Pillar of Delhi, India, erected by Chandragupta II to honor the Hindu god Vishnu, in the 4th century CE.
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"Iron Pillar of Delhi."
https://commons.wikimedia.org/wiki/File:QtubIronPillar.JPG
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Public domain.