लोथल, जो हड़प्पा सभ्यता का एक प्रमुख बंदरगाह स्थल है, वर्तमान में भारत के किस राज्य में स्थित है?

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?