why was ashoka known as a uniqe ruler?
Ashoka was the most famous Mauryan ruler. He fought a war to capture Kalinga, where he was horrified to see the violence and bloodshed. Thereafter, he tried to spread the message of peace by adopting dhamma and the teachings of the Buddha. He was the first ruler to have got his messages inscribed on rocks and pillars. Ashoka treated his subjects like his children and appointed officials to teach his dhamma. He was a great administrator and built roads and rest houses and dug wells for the comfort of people. He sent messengers to spread the message of dhamma to countries like Syria, Egypt, Greece and Sri Lanka. His description and of the Mauryan Empire and its capital Pataliputra was provided by Megasthenes, an ambassador of the Greek ruler Seleucus Nicator.
Ashoka was known as a unique ruler because after the Kalinga war because till him no one could defeat Kalinga and also he was unique because took care of people in his kingdoms. His famous quote "All men are my children. I am like a father to them. As every father desires the good and the happiness of his children, I wish that all men should be happy always." tells us this.