The writer decides to write about something that happened years back, therefore, his style, diction will be related to that era/time.
For example, a contemporary writer that wants to write about Victorian era must place the events in the book in the right historical context i.e one can't see certain words and expressions, and the characters can't wear leather strap blouses or live in condos.
Since I can't look at the paragraph I am not positive of one answer. But it does seem like the answer would be true because if the paragraph has a transition and details then it is a well developed paragraph.
