Sandford, legal case in which the U.S. Supreme Court on March 6, 1857, ruled (7–2) that a slave (Dred Scott) who had resided in a free state and territory (where slavery was prohibited) was not thereby entitled to his freedom; that African Americans were not and could never be citizens of the United States;
I don't know anything... Maybe this helps? So maybe A? PLEASE correct me if this does not help and tell me the right answer... ''_''
