Question

what where the subjects on which books where written in the past​

Answer 1

Please Give Me A Lot Of Stars And Press Thanks

Answer : In the past a number of books dealt with all kinds of subjects. These were religious beliefs and practices, the lives of kings, medicine and science. Besides, there were epics, plays and poems. Many of these were written in Sanskrit, others were in Prakrit and Tamil.

Explanation  :   The American Civil War. The subject has well over 100,000 books, monographs and dissertations written about it. There is approximately one book or dissertation written about the subject for every 5 people that died in the war and there were a lot of people who died in that war.

Answer 2

your question is wrong it should be language IN place of subject