🛠️ Invention or technique

Clay tablet

Tablilla de arcilla

Date
c. 3300 BCE · confidence high
Place
Uruk, Sumer, Iraq
Credited to
Sumerians
Field
Knowledge & symbols

What it is

A writing medium that is cheap, mouldable and, once fired or dried, almost indestructible. Its durability explains why hundreds of thousands of Mesopotamian documents survive.

What it led to

  • Permanent temple and palace archives that allowed decades of transactions to be audited
  • Sealed clay envelopes protecting contracts against forgery
  • Unintentional preservation of Mesopotamia's memory, thanks to the fires that baked the archives
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