<span>The author used the technique of describing the background of the story with the time.This case with makes the seem shocked from reading it.For example, the author used his technique to make the readers get shocked and become sad that she had to go back to the servant situation again.</span>
The subject would be "the ball." The subject in the sentence is the person, place, or thing. In this case the ball would be the subject because it's the most mentioned in the sentence, and also it's the first thing that comes into mind when your reading the sentence, the BALL hits a goal post and then the BALL bounced off.
Hope this helps!