How did Asoka come to control the Mauryan Empire?

After Alexander the great passed, they broke into provenances. Chandragupta was a leader of one of those, but decided to become a Jian, (Jainism is an ancient Indian philosophy that combines elements of Hinduism and Buddhism.) Ashoka was Chandragupta’s grandson and a ferocious warrior. Upon the death of his father, Ashoka is believed to have massacred his brothers and sisters in order to seize control of the Mauryan Empire.

Asoka personal religion became Buddhism after the kalinga war