Earliest evidence of autochthonous iron production in West Africa. (jan 1, 3000 BC – jan 1, 2500 BC)
Description:
https://en.wikipedia.org/wiki/Iron_metallurgy_in_AfricaAugustin F. C. Holl. The Origins of African Metallurgies. Anthropology. Oxford research encyclopaedias. Published online 30 June 2020. DOI: https://doi.org/10.1093/acrefore/9780190854584.013.63
Added to timeline:
Date:
jan 1, 3000 BC
jan 1, 2500 BC
~ 500 years