Answer: The invention of tools changed history, because it enabled early humans to be able to hunt, start fire, and utilize for other things since the tools were rocks ( example - the Oldowan).
Step-by-step explanation:
The invention of rocks sort of upgrade our brain size because in the early ages, our ancestors that to eat what ever the could find and since they eat anything they could find their chewing muscles had to be good enough to chew that "food" that they found and due to eating anything their diets were bad to. Believe it or not we all were vegetarian at once ( 2.6 million years ago to be a exact, when the tools were invented) but, when our ancestors invented the tools it change the history, we could hunt animal because of tool, start fire to cook that same food, and due to to ls the human digestive system changed and also, did the brain development.
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