Explanation:

Palamau is one of the twenty-four districts of Jharkhand state, India. It was formed in 1892. The administrative headquarter of the district is Medininagar, situated on the Koel River.The Palamu district have site of Neolithic and chalcolithic settlement in the confluence of Son and North Koel river in Kabra-Kala mound. During the medieval period Chero dynasty was ruling in the region which had become tributaries of Mughal empire during rule of Shahjahan and East India Company. In 1812 East India company took direct control of the region.