Add spaces: BecauseofthefoolishnessofaprincipalintheNationalLibrary,thebookhadnearlyperished,eventhough,duetoitsageanditscontent,ithighlydeservestheattentionofbookfriends.
Because of the foolishness of a principal in the National Library, the book had nearly perished, even though, due to its age and its content, it highly deserves the attention of book friends.