Concept:
Buddhist Councils were important assemblies held to preserve and propagate the teachings of the Buddha and to resolve doctrinal disputes.
Step 1: Understanding the Fourth Council.
The Fourth Buddhist Council is associated with the Kushan ruler Kanishka.
Step 2: Location and time.
It was held in Kashmir (Kundalvana) during the 1st--2nd century CE.
Step 3: Significance.
- Compilation and systematization of Buddhist texts
- Associated with the development of Mahayana Buddhism
Step 4: Eliminating other options.
- First Council: Held at Rajgriha under Ajatashatru
- Second Council: Held at Vaishali
- Third Council: Held at Pataliputra under Ashoka
Step 5: Conclusion.
Thus, the Fourth Buddhist Council was held during Kanishka’s reign.