The Immediate Effect of the American Revolution Upon Slavery Was

The immediate effect of the American Revolution upon slavery was that

A) slavery was abolished throughout America as inconsistent with the Declaration of Independence.
B) northern states moved toward emancipation of their slaves, and most southern states restricted the importation of slaves.
C) slavery came to be justified as a "positive good" by its defenders in the North and South.
D) because slavery was still too economically important in both the northern and the southern states, the movement to abolish it failed everywhere.