The three stages of the Stone Age are:
(i) Palaeolithic Age:In this period, man used crude stone tools and weapons and led a nomadic life. It was also known as the 'Old Stone Age'.
(ii) Mesolithic Age: In this age, man used microlithic stone tools which were binded or joined to handles or sticks of wood/bamboo. In this age, man started domesticating animals. It was also known as the 'Middle Stone Age'.
(iii) Neolithic Age: In this age, man used polished stone tools, domesticated animals, used tools for agriculture and led a settled life. It was also known as the 'New Stone Age'.