What material did the Indus Valley Civilization use to construct their drainage pipes?

Answer

Baked bricks

The Indus Valley civilization, particularly in cities like Mohenjo-Daro and Harappa, utilized baked bricks for their piping. This choice of material demonstrated an advanced mastery of material science, specifically regarding durability and water resistance, which allowed their sophisticated urban drainage networks and covered sewers to function effectively.

What material did the Indus Valley Civilization use to construct their drainage pipes?
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