answers: Udayin
context: R. C. Majumdar theorizes that Samudragupta directly controlled an area extending from the Ravi River (Punjab) in the west to the Brahmaputra River (Bengal and Assam) in the east, and from the Himalayan foothills in the north to the Vindhya hills in the south. The south-western boundary of his territory roughly followed an imaginary line drawn from present-day Karnal to Bhilsa. In the south, Samudragupta's empire definitely included Eran in present-day Madhya Pradesh, where his inscription has been found. The Allahabad Pillar inscription suggests that he advanced up to Kanchipuram in the south. However, since the claims in the Allahabad </s> Pataliputra Pataliputra (, IAST: ), adjacent to modern-day Patna, was a city in ancient India, originally built by Magadha ruler Udayin in 490 BCE as a small fort () near the Ganges river. Extensive archaeological excavations have been made in the vicinity of modern Patna. Excavations early in the 20th century around Patna revealed clear evidence of large fortification walls, including reinforcing wooden trusses. The etymology of Pataliputra is unclear. "Putra" means son, and "" is a species of rice or the plant "Bignonia suaveolens". One traditional etymology holds that the city was named after the plant. Another tradition says </s> the erection of a "lingam" (the symbol of Shiva) on the hill of Kunjarakunja. The "lingam" is sited on the noble island of Yawadwipa (Java), which the inscription describes as blessed with an abundance of rice and gold. Yawadwipa, the inscription says, had long been under the rule of the wise and virtuous king Sanna, but fell after his death into disunity. Amid a period of confusion Sanjaya, son of Sannaha (the sister of Sanna) ascended to the throne. Sanjaya mastered holy scriptures, martial arts, and displayed military prowess. After the conquest of neighboring areas his reign was peaceful and
question: who shifted the capital of magadh from rajagrih of patliputra