Examples Of Historical Authenticity

Historical authenticity is the accurateness in all aspects of the story, from the use of language to historical records. However, the authenticity of a story is limited because most writing is written in modern times and there is no possible way to get everything perfect. There is always some discrepancy. As an example of historical authenticity, would the way the character speaks and what the subject is they are speaking about is important, because character can't address and discuss issues that were not present or didn't exist at the time because then the story would no longer be historically authentic.