c. 3,300 BCE
Technology
Southwest Asia
Bronze alloying
Copper deliberately alloyed with tin to make a harder, castable metal.
Why it mattered
The first engineered material, and the trade networks tin required.
Bronze Age
3,300 BCE
2 recorded milestones at this point in the record.
c. 3,300 BCE
Medicine
Alps
Otzi's toolkit and tattoos
A man frozen in the Alps carried a copper axe, fire kit, medicinal fungus and therapeutic tattoos.
Why it mattered
A single preserved life showing how sophisticated Neolithic technology had become.
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