विनय पिटक बौद्ध त्रिपिटक का एक हिस्सा है जिसमें मुख्य रूप से _____ से संबंधित नियम शामिल 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?