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.
Ashoka’s Dhamma emphasised on non-violence and mutual respect. It encompassed a social and intellectual code of ethics. It focused on primacy of ethical behaviour and the recognition of the dignity of human life.