Sound of thunder focuses on how small things in our life can make a big difference in our lives.
Step-by-step explanation:
A sound of thunder is a story which is based on time travel. This is a short story which was written by Ray Bradbury. This story is a cautionary tale ans is one of the most entertaining stories written which makes people think about a lot of things in it.
The main theme and message of this story is that it shows that things which we might consider to be small in our life might make a very big and major decisions in our lives that we might have not even thought of.