Back-story is a great way to give readers a feel of a specific period or periods, what events were taking place at that time, family history etc.
Back-story generally serves 2 functions:
• Unveil information about the characters, usually the main character(s) and
• Build a picture of the world where the story is based.
In addition, back-story serves to highlight the actions and motives coupled to the main conflict.
Back-story, in my expert opinion, works hand-in-glove with setting and atmosphere.
Tip 1: Always check your facts. Many readers may not pick up on incorrect dates or events, but you can guarantee that one will and that’s not good.
Tip 2: Remember that readers get involve in the emotions of the characters and their stories by exploring and learning from their (your characters) lives.