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.
The Puranas is important as they were the main influence in the development from early Vedic religion to Hinduism
All of these
The Shastras contained works of science and philosophy
The Bhagvad Gita a later addition to the Mahabharata enshrines a philosophical doctrine and in it are described the three paths to salvation: karma, gyan and bhakti
EXAMIANS