शासन कला पर आधारित प्रसिद्ध पुस्तक 'अर्थशास्त्र' निम्नलिखित में से किसके द्वारा लिखी गई थी?

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?