1. The Kushanas formed a section of the Yueh-chi tribes, who inhabited north western China in the remote past.
2. In the first century BC, the Yueh-chi tribes were composed of five major sections of which the Kushanas attained political ascendancy over others.
3. By the beginning of Christian era, all the yueh-chi tribes had acknowledged the supremacy of the Kushanas.
4. They settled down in the Bactrian and Parthian lands.
5. The Kushanas gradually overran Bactria and Parthia and established themselves in northern India.
6. Their concentration was mostly in the Punjab, Rajaputana and Kathiawar.
7. Kushana rulers were Buddhists.
8. Takshashila and Mathura continued to be great centres of Buddhist learning, attracting students from China and western Asia.
