Answer:
The stone age, or the paleolithic age.
Step-by-step explanation:
The stone age (paleolithic) is a relatively self explanatory answer in the sense that, most hand axes and spears were made of hard stones shaped and sharpened into points and sharp edges. Cave paintings are from around the upper paleolithic ages. These inventions may dip into the earliest stages of the neolithic period as well (also known as the new stone age)
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