During which reign was Buddhism split up' into the Hinayana and Mahayana sects at the Buddhist Council?
The Fourth Buddhist Council was held at Kundalvana, Kashmir in 72 AD under the patronage of Kushan king Kanishka. The president of this council was Vasumitra, with Asvaghosa as his deputy. This council distinctly divided the Buddhism into 2 sects Mahayana & Hinayana