Step 1: Understanding the Concept:
The question asks to identify the social group associated with the Tana Bhagat movement, a historical movement in the Chotanagpur region of India.
Step 2: Detailed Explanation:
- The Tana Bhagat movement was a tribal uprising that began in 1914 among the Oraon tribe in the Chotanagpur plateau (present-day Jharkhand).
- The Oraon are classified as a Scheduled Tribe in India.
- The movement was led by Jatra Oraon. Initially, it was a religious reform movement aiming to purify the Oraon way of life (giving up meat, liquor, and traditional spirit worship).
- It later developed into a non-violent resistance movement against British colonial policies and local landlords, and it eventually merged with Mahatma Gandhi's Non-Cooperation Movement.
Step 3: Final Answer:
The Tana Bhagat movement is associated with Scheduled tribes.