Hel now please now

Background: Following the Battle of Kalinga, Asoka surveyed the cost of war and had the message below inscribed on a rock pillar found in his kingdom.
"When an unconquered country is conquered, slaughter, death, and deportation of people [are taking place] there. Thus arose His Sacred Majesty's Remorse for having conquered the Kalingas"

Source: 13th Rock Edict from Asoka’s Kingdom. Circa 250 BC.
Remorse- deep regret for something
Is this a primary or secondary source?

What information from the source proves your answer to #1?

What was Asoka’s point of view of war following the Battle of Kalinga?

What information in the text supports your answer to #3?

If you were an historian researching life for conquered people under Asoka, would you consider this a credible source? Why or why not?

What other sources would be helpful to determine what life was like for conquered people under Asoka? Why?