Encyclopedia > 4200 BC

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5th millennium BC

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(6th millennium BC - 5th millennium BC - 4th millennium BC or 40th century BC - other millennia)


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Significant persons:

Inventions, Discoveries, Introductions



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Quackery

... is the practice of unproven, ineffective medicine, usually in order to make money or to maintain a position of power. Quackery has existed all throughout human ...

 
 
 
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