Answer: Neolithic Revolution. The Neolithic Revolution changed the way humans lived. The use of agriculture allowed humans to develop permanent settlements, social classes, and new technologies. Some of these early groups settled in the fertile valleys of the Nile, Tigris-Euphrates, Yellow, and Indus Rivers.
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Answer:
well you see, the price of a product determines how many people buy it which determines the availability of the product. also, if a bunch of people buy the product then the people are going to want better things, hence innovation.
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