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Written— Data storage

InventTable — WRITTEN ERA — Data storage

Cuneiform first written language 3500 BCE Sumer, Mesopotamia (2)
Base 60 numbers counting time, seconds, minutes 3100 BCE Sumer, Mesopotamia
Math number systems 2700 BCE Egypt
Ink for writing on papyrus 2500 BCE Egypt, China
Map on clay tablet navigation 2300 BCE Babylonia
Proto semitic alphabet consonants only, no vowels 2000 BCE Mesopotamia
Phoenician alphabet consonants only, no vowels 1100 BCE Phoenicia
Dictionary reference book 1000 BCE China

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