This is a Simile.
There is no hidden meaning for it to be a metaphor, and it uses the form as something or like something, which makes it a simile.
Answer:
The Emancipation Proclamation was a document that freed or liberated the slaves in the rebellious states, it allowed the liberated slaves to join the union army and fight, it was a symbol of equality that inspired many people, and it also was an abolition to slavery for the United States of America.
Answer:
To interest the reader and inform them a little bit on what that paragraph or whole essay is going to be about
Answer:
a person or thing that is doomed or cannot be saved.
Explanation:
Basically like you messed up real bad its to late you cant do nothing to fix it