How did Chandragupta Maurya establish the Mauryan Dynasty?

Chandragupta Maurya was dismissed from the service of Nandas who ruled before him. He then met Kautilya, a Brahmin at Takshila. They joined hands to destroy the Nanda dynasty. After a long series of battles with Chandragupta, the Nanda capital at Pataliputra fell. This led to the emergence of the Mauryan Dynasty with Chandragupta Maurya as the emperor.