Jharkhand /dʒɑrˈkɑːnd/^{[citation needed]} (Hindi: झारखण्ड; Bengali: ঝাড়খন্ড; Urdu: جھاڑکھنڈ; Jhārkhaṇḍ, pronounced [ˈdʒʱaːrkʰəɳɖ] ( listen)) is a state in eastern India. It was carved out of the southern part of Bihar on 15 November 2000. Jharkhand shares its border with the states of Bihar to the north, Uttar Pradesh and Chhattisgarh to the west, Orissa to the south, and West Bengal to the east. It has an area of 79,714 km² 49,821 sq mi (129,040 km²). The industrial city of Ranchi is its capital and Dumka is sub capital while Jamshedpur is the largest and the biggest industrial city of the state. Some of the other major cities and industrial centres are Dhanbad, Bokaro and Hazaribagh.

The name "Jharkhand" means "The Land of Forests".

According to some writers like Gautam Kumar Bera, there was already a distinct geo-political, cultural entity called Jharkhand even before the period of Magadha Empire. Bera's book (page 33) also refers to the Hindu Mythological book Bhavishya Purana. The tribal rulers, some of whom continue to thrive till today were known as the Munda Rajas, who basically had ownership rights to large farmlands. During the Mughal period, the Jharkhand area was known as Kukara.

Song In (in hangul 송인, in hanja 宋仁) was a civil official in the mid-Goryeo era who became the intermediary founder of the Jincheon Song clan. His highest post was munha pyeongjangsa (문하 평장사). This was the highest government position in the period. Song In was responsible for administration, judicial affairs and economy in the district.

As he performed meritorious deeds during the King, he was conferred with Chanhwagongsin and Jincheonbaek. Baek was a position of politicians who were responsible for administration, judicial affairs and economy in the district. As the government created him Jincheonbaek, his family started regarding Jincheon as their origin. Hence, the family origin became Jincheon Song.

When he was in the position of Sangsanbaek, he tried to be just and fair in all the administrative affairs and strived to enhance the welfare of his people. He also focused on education for the youth and courtesy for people, which made his district famous for most excellent behaviors in the nation. After that, the people have long paid tribute to his feats.