Understanding the Magadhan Empire and its Capital

The question asks about the ruler who established Pataliputra as the capital of the powerful Magadhan Empire. The Magadhan Empire was a prominent ancient Indian kingdom that played a crucial role in the political history of the subcontinent.

Initially, the capital of the Magadhan Empire was Rajagriha (modern Rajgir). Over time, due to strategic considerations, the capital was shifted to Pataliputra (modern Patna), a city located at the confluence of major rivers like the Ganga and Son. This location offered significant advantages in terms of trade, communication, and defense.

Analyzing the Rulers and Their Connection to Pataliputra

Let's examine each option provided in the question:

• Bimbisara: He was one of the early and important rulers of the Haryanka dynasty, which ruled Magadha. His capital was primarily Rajagriha. While he laid the groundwork for the expansion of the Magadhan Empire, he is not credited with establishing Pataliputra as the capital.
• Bindusara: He was the son of Chandragupta Maurya and the father of Ashoka. He belonged to the Mauryan dynasty, which came to power much later than the Haryanka dynasty. By the time Bindusara ruled, Pataliputra was already the established capital of the Mauryan Empire.
• Ajatashatru: He was the son and successor of Bimbisara. During his reign, Magadha continued its expansion. Historical sources suggest that Ajatashatru recognized the strategic importance of the location of Pataliputra (then known as Pataligrama) and built a fort there during his conflict with the Vajjian confederacy. This fort eventually grew into the city of Pataliputra. While Rajagriha remained significant, Pataliputra gained prominence and was eventually established as the main capital during or shortly after his reign, solidifying its strategic position.
• Ashoka: He was the grandson of Chandragupta Maurya and one of the most famous rulers of the Mauryan dynasty. Ashoka ruled the Magadhan Empire with Pataliputra as his magnificent capital. He expanded and beautified the city, making it a grand imperial center. However, he did not establish it as the capital; it was already the capital when he ascended the throne.

Determining the Founder of Pataliputra Capital

Based on historical accounts, Ajatashatru is credited with building a fort at Pataligrama, which later developed into Pataliputra. While the full transition of the capital from Rajagriha to Pataliputra might have been a gradual process completed by his successors, the foundation and initial strategic establishment of Pataliputra as a significant center, leading to its status as capital, is attributed to Ajatashatru. He foresaw its strategic potential and took steps to develop it as a military and administrative base.

Conclusion on Pataliputra's Establishment

Considering the historical evidence regarding the fortification and strategic development of Pataliputra during the reign of Ajatashatru, he is widely recognized for establishing the foundation that led to Pataliputra becoming the capital of the Magadhan Empire, succeeding Rajagriha.

Therefore, the ruler credited with establishing Pataliputra as the capital of the Magadhan Empire is Ajatashatru.

Revision Table: Magadhan Empire Rulers and Capitals

Additional Information on Pataliputra's Significance

Pataliputra's location at the confluence of major rivers (Ganga, Gandak, Son, and Ghaghara) made it strategically invaluable. It served as a natural defense mechanism (Jaladurga or water fort) and facilitated trade and transport across the vast Magadhan Empire. Its central location within the empire and accessibility via waterways contributed significantly to the administrative and economic control exerted by the rulers who made it their capital.