Lincoln’s 2nd Inaugural Address. “...until every drop of blood drawn by the lash, shall be paid with another drawn by the sword...” GOOD STUFF!
I agree with you. It’s not among the choices, but I’d say Lincoln’s Second Inaugural Speech. After that, Martin Luther King, Jr.’s I Have A Dream Speech.
and Lincoln's message to congress before the emancipation
"Fellow-citizens, we cannot escape history. We of this Congress and this administration, will be remembered in spite of ourselves. No personal significance, or insignificance, can spare one or another of us. The fiery trial through which we pass, will light us down, in honor or dishonor, to the latest generation.....We -- even we here -- hold the power, and bear the responsibility."