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Human messengers on foot or horseback common in Egypt and China with messenger relay stations built.
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Papyrus rolls and early parchments made of dried reeds - first portable and light writing surfaces.
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The Greeks start the very first library.
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First recorded use of homing pigeons used to send message - the winner of the Olympic Games to the Athenians.
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The first encyclopedia is written in Syria.
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Oldest record of writing in China on bones.
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Greeks use a phonetic alphabet written from left to right.
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The very first postal service - for government use in China.
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The Phoenicians develop an alphabet.
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The Egyptians develop hieroglyphic writing.
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The Sumerians develop cuneiform writing - pictographs of accounts written on clay tablets.