Which is the first major advance in early cultures?
the development of civilization
the control of fire
the invention of tools
the beginning of agriculture

The invention of tools.

Explanation:

Tools were the only thing that kept cavemen and women alive.

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changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .

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