c. 300
Science
Mesoamerica
Maya calendar and astronomy
Maya astronomers tracked Venus, eclipses and a Long Count reaching over millions of days.
Why it mattered
Among the most precise pre-telescopic astronomical systems.
Antiquity
300
2 recorded milestones at this point in the record.
c. 300
Transportation
Sahara
Camel caravans cross the Sahara
The dromedary made regular trans-Saharan crossings viable for salt and gold.
Why it mattered
Connected West Africa to the Mediterranean world.
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