The Neolithic period is famous because agriculture began to spread and as a result the hunter-gatherer way of life began to fade. The advent of agriculture would become the nucleus for the creation of permanent settlements.
For further reading check the following articles:
|UPSC Prelims Ancient History Questions||History of Ancient India NCERT Notes|
|Vedic Civilization: Ancient History for UPSC IAS Exam||UPSC FAQ|
|Pallavas – Society and Architecture||Indus Valley Civilization Facts|