| − | It is thought by [[Old Earth Creationists]] and [[evolutionists]] that during the '''6th millennium BC''' many environments shifted around the world, triggering a change in subsistence patterns. Some historians allege that [[Hunter-gatherers]] in the [[Middle East]] begin to shift towards sedentary [[horticulture]] and early intensive [[agriculture]]. Young Earth Creationists, believing that the Earth is approximately 6,000 years old, do not believe that the 6th millennium BC took place at all.
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