Asoka was a conqueror in his own right..then he converted to Buddhism and India fourished after that awhile.. He lamented his conquests. Thus the wikipedia:
He embraced
Buddhism from the prevalent
Hindu tradition after witnessing the mass deaths of the
war of Kalinga, which he himself had waged out of a desire for conquest. He was later dedicated to the propagation of Buddhism across
Asia and established monuments marking several significant sites in the life of
Gautama Buddha. Ashoka was a devotee of
ahimsa (
nonviolence),
love,
truth,
tolerance and
vegetarianism. Ashoka is remembered in history as a
philanthropic administrator.
In the
history of India, Ashoka is referred to as
Samraat Chakravartin Ashoka - the Emperor of Emperors
Ashoka.
His name "aśoka" means "painless, without sorrow" in
Sanskrit (the
a privativum and
śoka "pain, distress"). In his
edicts, he is referred to as
Devānāmpriya (Pali
Devānaṃpiya or "The Beloved Of The Gods"), and
Priyadarśin (Pali
Piyadasī or "He who regards everyone with affection").