Jharkhand is a state located in eastern India. It shares its borders with several states, including Bihar, Uttar Pradesh, Chhattisgarh, and Odisha. However, the state that shares its borders with Jharkhand to the east is Odisha.

Here's a detailed explanation:

- Jharkhand is located in the eastern part of India and is surrounded by several states. It is bordered by Bihar to the north, Uttar Pradesh to the northwest, Chhattisgarh to the west, and Odisha to the east.

- Odisha, formerly known as Orissa, is a coastal state located to the east of Jharkhand. It is known for its rich cultural heritage, temples, and diverse landscapes.

- Jharkhand and Odisha share a border that stretches for about 440 kilometers. The border between the two states is formed by the districts of Simdega, Gumla, Khunti, Ranchi, and East Singhbhum in Jharkhand, and Mayurbhanj, Keonjhar, and Sundargarh districts in Odisha.

- The border between Jharkhand and Odisha is marked by rivers like the Subarnarekha, which flows through both states. These rivers not only serve as natural boundaries but also play a crucial role in the irrigation and agricultural activities of the region.

- The border region between Jharkhand and Odisha is characterized by forests, hills, and tribal communities. It is home to various indigenous tribes who have their distinct cultures, traditions, and languages.

In conclusion, Jharkhand shares its border with Odisha to the east. The border between the two states is marked by rivers, forests, and tribal communities.