Who was the last ruler of the Nanda dynasty?

What does the Rummindei /Lumbini Pillar inscription signify?

Who described the Mauryan dynasty as marking the transition from darkness to light?

Read the following excerpt and answer the question that follows:

"His dhamma of edicts is not any particular religious system but the moral law independent of any caste or creed, the sara or essence of all religions."

(Source: https://www.du.ac.in/up/oads/new-web/04012023_Appendix-108.pdf)

Which Mauryan ruler propagated these principles?