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  1. Iron Age - Wikipedia

  2. Ferrous metallurgy - Wikipedia

  3. Iron Age ‑ Timeline, Technology & Facts | HISTORY

  4. Smelting - Wikipedia

  5. Iron Age | Definition, History, Technology, & Facts | Britannica

  6. Iron Age - Students | Britannica Kids | Homework Help

  7. Iron processing | Definition, History, Steps, Uses, & Facts | Britannica

  8. READ: The Iron Age - Khan Academy

  9. African Iron Age - 1,000 Years of African Kingdoms - ThoughtCo

  10. 5 Iron Age Tools and Innovations - HISTORY