John's choices influenced the plot and end of story because of the choices been made of John.
Explanation:
The circumstances described in Gies's book illustrate her great courage and determination, as she adhered to her humanitarian convictions despite the great risk to her own life. Gies developed a close relationship with Anne, and her story provides a new perspective on the legendary figure.
I didn't understand what you meant by "underlined words" because there aren't any underlined words, but here's the sentence rewritten:
Often, we are invited to the parties.