Do you think that the United States is a "land of opportunity?

In the excerpt from the emancipation proclamation, which phrase or sentence supports the claim that president lincoln did not want the slaves to take up arms against their former masters?

Read the following passage: he roamed from chamber to chamber with hurried, unequal, and objectless step. the pallor of his countenance had assumed, if possible, a more ghastly hue— but the luminousness of his eye had utterly gone out. the once occasional huskiness of his tone was heard no more; and a tremulous quaver, as if of extreme terror, habitually characterized his utterance. there were times, indeed, when i thought his unceasingly agitated mind was laboring with some oppressive secret, to divulge which he struggled for the necessary courage. which of the above ideas might be considered foreshadowing? he is wandering all over the chamber his skin tone is really pale his voice is quivering the narrator thinks he is laboring with an oppressive secret

How does dr. king 's understanding of foutsider" compare to the understanding of the writers of "a call for unity"?