Read carefully:
http://www.google.com/search?rlz=1C1GGGE_enUS379US379&gcx=c&sourceid=chrome&ie=UTF-8&q=key+technology+that+began+around+500+bce+sub-saharan+africa
what is a key technological that began around 500 bce?in the sub saharan africa?
a.yam civilization
b.iron smelting
c.writing
d.monumental archetecture
please help- playing a world game with my sis!
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