Explanation:

The Kurukh or Oraon also spelt Uraon or Oraon, are a Dravidian ethnic group inhabiting the Indian states of Jharkhand, West Bengal, Odisha and Chhattisgarh. They predominantly speak Kurukh as their native language, which belongs to the Dravidian language family. In Maharashtra, Oraon people are also known as Dhangad or Dhangar. Traditionally, Oraons depended on the forest and farms for their ritual and economic livelihood, but in recent times, a few of them have become mainly settled agriculturalists. Many Oraon migrated to tea gardens of Assam, West Bengal and Bangladesh as well as to countries like Fiji, Guyana, Trinidad and Mauritius during British rule. They are listed as a Scheduled Tribe for the purpose of India's reservation system.