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Thumbnail Sketch of History of Technology1 (not responsible for dates) All of the following dates are approximate and many of them are debatable. Isolating exactly when a particular technology developed or was invented is always problematic.
1) Pre homo sapiens: perhaps about 500,000 years ago Fire. During this period (pre homo sapiens): stone tools and weapons; bow and arrow; about 100,000 BCE beginnings of spoken language.
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