First Rajgir, Second vaishali, Third patliputraFourth Buddhist Council is the name of two separate Buddhist council meetings first in Sri Lanka and another at Sarvastivada school, in Kashmir around the First Century AD.
Kushans were most probably one of the five branches of the Yuezhi confederation. Kujula Kadphises was the first Yuezhi chief and he laid the foundation of the Kushana Empire in India. He established his supremacy over Kabul, Kandahar, and Afghanistan.