'दानस्तुति' (दाताओं और दानों की प्रशंसा में रचे गए सूक्त) किस प्राचीन भारतीय ग्रंथ का हिस्सा हैं?

In Ancient Indian Statecraft, Kautilya's 'Rajamandala' theory primarily deals with:

The First Buddhist Council was held at ______.

Which ancient Indian text contains references indicating that population counts or census-like records were maintained in ancient India?