When was vulcanized rubber invented ? o-o
1 answer:
Hancock claimed to have invented vulcanization independently, and received a British patent, initiated in 1843, but finalized in 1844.
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Since this is a timed test I'm pretty sure i'm too late to give the answer but it's C. Hope this helped (although i'm late)
Rights that they thought they had but not really
<span>Did now have political structure </span>
