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Writing in Mesoamerica had developed into a fully articulated system by 900 BC.
 
Writing in Mesoamerica had developed into a fully articulated system by 900 BC.
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In India, the Indus Valley civilization used a logographic writing system over three thousand years ago.
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In India, the Indus Valley civilization used a logographic writing system over 35 hundred years ago.
    
==Kinds of Writing==
 
==Kinds of Writing==
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