What can you tell me about India? 
 North India fell to the Delhi Sultanate ; south India was united under the Vijayanagara Empire . 
 That's interesting. Do you know anything about their history? 
 After the 10th century , Muslim Central Asian nomadic clans , using swift-horse cavalry and raising vast armies united by ethnicity and religion , repeatedly overran South Asia 's north-western plains , leading eventually to the establishment of the Islamic Delhi Sultanate in 1206 . 
 I see. Any other historical facts you'd wish to share? 
 In the late Vedic period , around the 6th century BCE , the small states and chiefdoms of the Ganges Plain and the north-western regions had consolidated into 16 major oligarchies and monarchies that were known as the mahajanapadas . 
 Wow! That's interesting. Anything else you can tell me? 
 Cotton was domesticated in India by 4000 BCE . 
 What else can you tell me-historically? 
 During the period 2000-500 BCE , many regions of the subcontinent transitioned from the Chalcolithic cultures to the Iron Age ones . 
 This is fantastic! Keep pouring out the history lesson, I want to know more. 
 After 6500 BCE , evidence for domestication of food crops and animals , construction of permanent structures , and storage of agricultural surplus , appeared in Mehrgarh and other sites in what is now Balochistan . 
 These guys have been around for a long time. Well cutting the story short, do you have any fun facts you'd wish to share? 
 Nearly contemporaneous human rock art sites have been found in many parts of the Indian subcontinent , including at the Bhimbetka rock shelters in Madhya Pradesh . 
 I've learnt a great deal today, all because of your help. Thanks a million. 
 You are so welcome !!
India