Paharias were located in the Rajmahal Hills (A-IV), while the Santhals resided in the Damin-i-Koh region (B-I). David Ricardo, a well-known economist, is associated with economic theory (C-II), and Francis Buchanan, a physician and colonial surveyor, documented the flora, fauna, and tribes of India, including the Paharias and others in the Rajmahal Hills (D-III).