Chanakya was one of the greatest philosophers in ancient India who lived around 350-283 BC. He was born in Patliputra, Magadha (modern Patna, Bihar) and taught political science at Takshashila University. Chanakya became the advisor to Emperor Chandragupta Maurya and helped him defeat the Nanda king to unite most of India for the first time in history under the Maurya Empire.