The correct answer is: All of these.
North Chhota Nagpur division is one of the three divisions of the Indian state of Jharkhand. It is located in the northern part of the state and comprises the following districts:
- Hazaribagh
- Koderma
- Giridih
The division has a population of over 20 million people and is home to a diverse range of ethnic groups, including the Santhals, Mundas, Oraons, and Kharia. The economy of the division is based on agriculture, mining, and industry.
Hazaribagh is the largest district in the division and is known for its natural beauty. The district is home to the Hazaribagh National Park, which is a popular tourist destination. Koderma is a major industrial town in the division and is home to a number of steel mills and power plants. Giridih is a coal mining town and is also home to a number of educational institutions.
The North Chhota Nagpur division is a vibrant and diverse region with a rich history and culture. It is a popular tourist destination and is home to a number of important industries.