Concept:The Maurya Empire was founded by Chandragupta Maurya in 321 BCE.Explanation:Chandragupta Maurya established the Maurya Empire after overthrowing the Nanda dynasty.He unified most of the Indian subcontinent under a centralised rule.His advisor Chanakya (Kautilya) helped him with military and administrative strategies.He also defeated Seleucus I Nicator, a general of Alexander the Great.The empire lasted from 321 BCE to 185 BCE and became one of ancient India’s largest empires.Answer:B. Chandragupta Maurya