Who among the following stated that there was no slavery in India?

Who among the following lauds Indian society for not having any slaves?

Who among the following was not an Acharya in The Nalanda Vishvavidyalaya?

Who among the following was the Greek king of Syria mentioned in Asokan edict?

Which of the following was a tax levied on pastures in ancient India?

Which one of the following was not a part of Kautilya's Saptanga Theory of the State?