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The building and excavation of kaniji dam is being traced from the experience gained from the iron age which have lasted many centuries ago.
added by 1001277811 142 days ago 1    0

Others suggest the technology moved west from the Nile Valley, although the Iron Age in the Niger Rivervalley and the forest region appears to predate the introduction of metallurgy in the upper savanna by more than 800 years.
added by Anonymous 681 days ago 1    0

Kainji Dam is one of the amazing works in Nigeria
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Kainji Dam excavations revealed ironworking by the 2nd century BC. The transition from Neolithic times to the Iron Age was achieved without intermediate bronze production. Others suggest the technology moved west from the Nile Valley, although the Iron Age in the Niger Rivervalley and the forest region appears to predate the introduction of metallurgy in the upper savanna by more than 800 years.

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