c. 200 BCE
Communication
China
Paper
Chinese artisans pulp hemp and rags into thin, cheap sheets.
Why it mattered
The substrate on which nearly all recorded knowledge would travel.
Antiquity
200 BCE
2 recorded milestones at this point in the record.
c. 200 BCE
Transportation
China
Horse harness and the trace
Chinese carters devised a breast-strap harness that let horses pull without choking.
Why it mattered
Tripled the useful pulling power of a horse.
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