What is the theme of the book Framed By Gordon Korman pls help

Instead Korman prefers smart characters who are never afraid to take action to get whatever it is they want. A recurrent theme of the Swindle series is kids fighting against unfairness by taking matters into their own hands, and this book executes that theme in excellent fashion.

(Not my work)

men had a stronger claim to titles and wealth during the renaissance.

answer: this is easy, i found "it"

i will repeat the question again, "find it."

here, i located it.