A key technological development that began around 500 B.C.E.in sub-Saharan Africa was

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Iron smelting began around 500 B.C.E. in sub-Saharan Africa and was a key technological development that allowed for the production of durable tools and weapons, transformation of agriculture, and expansion of trade. Yam cultivation was an important agricultural practice in sub-Saharan Africa, but it did not begin around 500 B.C.E. Aqueduct construction and writing were not significant technological developments in sub-Saharan Africa during this time period.

A Key Technological Development That Began Around 500 B