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.
In the 6th century BCE the cultivable land was divided between the people. The beneficiaries were granted only the revenue of these lands and no administrative authority. There was emergence of the notion of private property, as there are references to the gift and sale of land.
Though the Satavahanas made liberal sacrificial fees to the Brahmanas, they also promoted Buddhism. Some of the important Buddhist sites under the Satavahanas were Nagarjunakonda and Amravati in Andhra Pradesh and Nashik and Junar areas of Maharashtra.
The Mauryan art is believed to be inspired from Achaemenid or Persian influence. We can find a lot of similarities in terms of form and style in the inscriptions of Ashoka and the Persian king Darius.