From what you know of united states history, which document was lincoln quoting when he said in “the gettysburg address” that the nation was dedicated to the proposition “that all men are created equal”?

a. the emancipation proclamation
b. the declaration of independence
c. the equal rights amendment
d. the missouri compromise

in "the gettysburg address" and "second inaugural address", lee's letter seeks to persuade by:
a. appealing to emotion.
b. invoking the authority of great writers.
c. making an irrational argument.
d. analyzing events within historical context.