who shifted capital of magadh from rajagrih to patliputra
Magadha Accounts differ slightly as to the cause of King Ajatashatru's war with the Licchavi, an area north of the river Ganges. It appears that Ajatashatru sent a minister to the area who worked for three years to undermine the unity of the Licchavis. To launch his attack across the Ganges River, Ajatashatru built a fort at the town of Pataliputra. Torn by disagreements the Licchavis fought with Ajatashatru. It took fifteen years for Ajatashatru to defeat them. Jain texts tell how Ajatashatru used two new weapons: a catapult, and a covered chariot with swinging mace that has been compared to a modern tank. Pataliputra began to grow as a centre of commerce and became the capital of Magadha after Ajatashatru's death.