Chanakya was one of the greatest philosophers in ancient India. He served as a professor at Taxila University before becoming the prime minister of Emperor Chandragupta Maurya. Through his intelligence, strategic thinking, and use of spies, Chanakya helped Chandragupta defeat the Nanda Empire and remove the Greek occupiers from India. Some of Chanakya's key accomplishments included establishing Chandragupta as the new ruler, outwitting many enemies through deception, and bringing stability to the Maurya Empire.