Name the Gupta ruler when the whole of Bengal and Assam was included in Gupta dynasty.

The correct answer is Samundragupta. Key Points: Samundragupta was the second emperor of the Gupta Empire of ancient India and is regarded as among the greatest rulers of the dynasty. As a son of the Gupta emperor Chandragupta I and the Licchavi princess Kumaradevi, he had expanded his dynasty's political and military power greatly. Samundragupta performed the Ashwamedha sacrifice to prove his imperial sovereignty and remained undefeated in the battle. His gold coins and inscriptions suggest that he was an accomplished poet, and he also played musical instruments such as the Iyre. His son Chandragupta II continued his expansionist policy. Additional Information: Gupta Rule is an important chapter in the history of ancient Bengal. Gupta rule spread over Bengal probably in the reign of Samundragupta towards the end of the 3rd or the beginning of the 4th century AD. The progenitor of the Gupta dynasty was Shrigupta. He ruled the area near Pataliputra (in Magadha). The actual founder of the Gupta Dynasty was Chandragupta I .