Q. In which year was the first book on the Santhali language written?
Answer: 1852 A.D.
Notes: The first grammar of the Santhali language, "An Introduction to the Santal Language," was published in 1852. It was authored by American Baptist missionary Jeremiah Phillips, who worked in Orissa. The book was printed by the Calcutta School-book Society's Press. This work was the earliest systematic study and documentation of the Santhali language.