Harappan Standardised Weights
Bronze Age
A standardised system of weights used across the entire Indus Valley Civilization, accurate to within 0.1% and based on a binary-decimal system not seen elsewhere in the ancient world.
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Indus Valley Drainage System
Bronze Age
A city-wide sewage and drainage network at Mohenjo-daro that predates Roman plumbing by 2,000 years, with covered drains, inspection chambers, and waste management infrastructure.
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