Out of his many wars, the two most significant were the battles of Tarain against the famous Rajput Ruler Prithviraj Chauhan.
He plundered villages and exterminated a large local population at the places he invaded. Taking advantage of the weak political condition of India, Mohammed Ghori began his invasions in 1175 AD from Multan and Uch followed by Lahore and later Delhi. India at that time was the richest region in the subcontinent for its wealth in precious and semi-precious stones, gold and silver but was divided and ruled by many Hindu rulers. One of the Turkish rulers was Mohammed Ghori who succeeded in securing a strong foothold in India and Islamic imperialism was renewed by him in the last quarter of the 12th century. In the 12th century, India witnessed many Turkish invasions which aimed at draining away Indias wealth and establishing Islamic rule. Ashokas ruthlessness was seen later when he went on to capture Kalinga soon after which he had a change of heart and turned towards Buddhism. Finally, Sushumna was killed and Ashoka was coroneted as the king.
Fierce Ashoka was now determined to avenge his mothers death and he made a plan with his minister to assassinate Sushumna. Sushumna, who was away on a campaign was enraged by the news, and he conspired to kill Ashokas pregnant wife, but unfortunately Ashokas mother is killed in a blunder. Ashoka, due to his capability was supported by the council of ministers and crowned the king. As Bindusara grew closer to his death bed, the drum rolls of warfare between his sons, the royal princes next in line to the throne, rose to a cruel peak. Bindusara though, was in favour of Sushumna over Ashoka. Learning from his grandfather, Ashoka mastered the Kshatriya military training and became a strong general and a shrewd statesman whereas Sushumna lacked military prowess. He had two well-known sons, Sushumna and Ashoka. Chandraguptas legacy of expanding the kingdom was taken over by his son Bindusara who spread the Kingdom to the southern part of India. The story of Sushumnas assassination by his half-brother, Ashoka, is a story from one of the largest empire in Indian history, The Mauryan Empire founded by Chandragupta Maurya in 321 BC.