Historical fiction means the plot takes place in a sitting in the past.
Is there a time period in history you like best?
The prohibition era, but an essential element to historical fiction is that it pays attention to the social conditions of the time.
That was an important time period. What drew you to that era?
Critics of historical fiction argue over the authenticity or historicity of the book.
How much truth do you think goes into historical fiction? 
Works of historical fiction can be criticized for lack of accurate period details.
I can see that. I wonder if most historical fiction authors employ fact checkers. 
Some subgenres include alternate history.