Which risk accelerated the degradation of early Mesopotamian bronze tools used in irrigation canal construction?

💡 Explanation

When bronze tools are exposed to saline soil, galvanic corrosion occurs because the different metals in bronze (copper and tin with trace impurities) create electrochemical potential differences in the presence of an electrolyte (salt water), resulting in accelerated corrosion. Therefore, galvanic corrosion degrades bronze tools, rather than work hardening, grain growth, or eutectic melting, which require dramatically different conditions.

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