c. 200
Agriculture
China
Horse collar
A padded collar lets a horse pull without choking, unlike the throat harness.
Why it mattered
Roughly doubled the draught power available to a farmer.
Antiquity
200
2 recorded milestones at this point in the record.
c. 200
Society
Horn of Africa
Aksum coinage and Red Sea trade
The Ethiopian kingdom of Aksum minted its own gold currency and traded from India to Rome.
Why it mattered
An African state operating at the top tier of world commerce.
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