Quotation yes is the answer
No, maybe include some commas
If i could change something about myself, it would be, to accomplish things for myself rather than to pleasure others.
Will not: won't
would not: wouldn't
who are: who're
were not: weren't
I have: I've
were not: ^^^^^
let us: let's
he has: he's
Answer: Areas of defense in times of war
Explanation:
The except speaks of the potential of national unity in the United States being shattered as a result of a lack of a common enemy that the World Wars and Communism gave them.
The Fault lines in the excerpt refer to demarcations between opposing sides in the World Wars and in the Cold War that people then gathered behind to fight against their enemy. This made these lines become Areas of defense in essence that everyone came behind in solidarity to defeat their World War and Cold War enemies.