What was the family of the Rig-vedic Aryans?

Ashoka carved out rock-cut caves at Barabar and Nagarjun hills in Bihar for one of the following:

The birth place of Siddhartha Gauthama Buddha is situated in

Which is the oldest Veda?

In which Buddhist scripture religious practices in the contemporary period of Buddha has been mentioned?

During Rig-Vedic Age the normal form of government was

Bodh Gaya is situated at

Which of the following Vedas contains the Gayatri Mantras?

The Bodhisattva Doctrine is associated with