AP US Historyhardmcq1 pt
The ruling in Dred Scott v. Sandford most directly undermined which of the following political principles?
A.Popular sovereignty as Douglas framed it, because the Court said neither Congress nor territorial legislatures could exclude slavery
B.The principle of judicial review established in Marbury v. Madison
C.The constitutional ban on the international slave trade
D.States' rights to secede from the Union