about the tools of old stone age and new stone age
Kindly refer to the following links :
https://www.meritnation.com/ask-answer/question/what-are-the-uses-of-stone-tools-in-stone-age-time/on-the-trail-of-the-earliest-people/9590517
https://www.meritnation.com/ask-answer/question/name-a-few-stone-tools-in-the-old-stone-age/on-the-trail-of-the-earliest-people/2227507
https://www.meritnation.com/ask-answer/question/what-are-the-uses-of-stone-tools-in-stone-age-time/on-the-trail-of-the-earliest-people/9590517
https://www.meritnation.com/ask-answer/question/name-a-few-stone-tools-in-the-old-stone-age/on-the-trail-of-the-earliest-people/2227507