Final answer:
Mauryan Emperor Ashoka was significant for his advocacy for Buddhist principles and his reforms to promote peace and compassionate rule throughout India.
Step-by-step explanation:
The significant about Mauryan Emperor Ashoka was his advocacy for Buddhist principles. As the head of the Mauryan army, Ashoka won a great battle that caused a large number of deaths and this brought an awakening in him. He converted to Buddhism and implemented reforms to promote peace and compassionate rule throughout India. Additionally, Ashoka's pillars inscribed with his teachings spread Buddhism and demonstrated the Mauryan empire's moral and political system.