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 Sixth Pillar Edict of Asohka talks about welfare of people. The Ashokan pillars contain motifs which have a rich and varied symbolism in resonance with many prevailing Indian religious traditions.