Answer:
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The Neolithic Revolution, also called the Agrarian Revolution, was the change from a nomadic, hunter-gatherer lifestyle to a settled, agrarian one with farming. Farming is more stable and secure and it gives people more time to engage in other activities, such as improving their tools and developing cultures: the Neolithic Revolution contributed to the technological development in the river valley civilizations by giving people time to improve on their technology.
A.) the safety of workers was often ignored by
The answer for your question is B
