According to B. B. Lal, former DG of ASI, Kalibangan site shows that an earthquake occured around 2600 BC, which brought to an end the Early Indus settlement at the site. It is perhaps the earliest archaeologically recorded earthquake.
During the reign of Dhruva (c. 780 – 793 CE), the Rashtrakuta kingdom expanded into an empire that encompassed all of the territory between the Kaveri River and Central India. He led successful expeditions to Kannauj and defeated the King Nagabhatta II. He also defeated the Palas of Bengal (Dharmapala).
The Chola kingdom was known as Cholamandulam, it was situated to the north-east of Pandya kingdom between Pennar and Vellar rivers. Tiger was the royal emblem of Chola Kingdom.
The Ninth Rock Edict criticizes the use of various popular ceremonies like during the marriage of son or daughter, birth of a child, etc. On the contrary it lays stress on Dhamma and tells the usefulness of moral conduct in one’s life.