What rhetorical appeals does milk use

Read the excerpt from "declaration of conscience" by margaret chase smith. the exercise of these rights should not cost one single american citizen his reputation or his right to a livelihood nor should he be in danger of losing his reputation or livelihood merely because he happens to know someone who holds unpopular beliefs. who of us doesn't? otherwise none of us could call our souls our own. otherwise thought control would have set in. this excerpt contains an example of

Why does the author of exploring the titanic give background information about his youth and education? to show his lifelong love for the ocean

What is the italicized part in the sentence , all of the operators are efficient.