Chandragupta Maurya established the Maurya dynasty subsequent to deposing the reigning Nanda king Dhana. For the 1st time during this phase, almost the entire subcontinent was united under a single sovereign. Under the Maurya dynasty, besides conquer of the entire Indian subcontinent, there was also an extension of the boundaries into Persia and Central Asia, encompassing the Gandhara region. Chanadraguta’s son Bindusara expanded the empire up to the limits of the present-day India. The sole region that was not under the Maurya dynasty rule was the then Tamil Kingdom.
The most celebrated ruler of the Maurya dynasty is Ashoka, who is known for his efforts in the propagation of Buddhism and erection of numerous rock edicts all across his kingdom.