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 lowest level of administration during the Satavahana period was a grama or village. It was under the charge of a gaulmika or village headman. The village headman was also the head of a military regiment consisting of nine chariots, nine elephants, 25 horses and 45 foot soldiers.
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