Answer:
The Chotanagpur plateau marks the further eastward extension, drained by the Damodar river.
Explanation:
The Chotanagpur plateau is located in eastern India and is a plateau that encompasses almost the entire state of Jharkhand, extending to the states close to it like Odisha, West Bengal and Chhattisgarh. This plateau is approximately 65,000 square kilometers long and marks the most easterly extension, drained by the Damodar River.
