Which process critically limited widespread adoption of iron tools in ancient Mesopotamia, despite iron ore abundance?

💡 Explanation

Absorbing carbon during smelting leads to brittle iron because forming iron carbide weakens the metallic bonds. Therefore brittleness limited adoption, rather than solely melting point, corrosion, or copper incompatibility, as these could be secondary but not primary limitations originally.

• Which structural limitation constrained Roman concrete fortifications against complete coastal submersion?
• Which microstructural consequence occurred in early Bronze Age metallurgy from repeated hot forging?
• Which obstacle complicated large-scale bronze axe production during the Early Bronze Age Mesopotamian Uruk period?
• Which process limited the lifespan of Roman roads constructed with multiple layers of materials?
• Which outcome occurs when an 18th-century wooden ship undergoes prolonged immersion in saltwater, despite copper sheathing?
• Which mechanism causes timber to petrify into stone-like material over geological timescales?