Q. Which ruler is recorded for using weapons such as "Shilkantaka" and "Rathmusala" against Vaishali?
Answer:
Ajatashatru
Notes: Ajatashatru used new weapons such as Rathamusala and Shilantaka against the Licchavis. He was the king of Haryanka dynasty of Magadha in east India. He was the son of King Bimbisara and was a contemporary of both Mahavira and Gautama Buddha. He forcefully took over the kingdom of Magadha from his father and imprisoned him.