Which statement BEST EXPLAINS the effect of the Dred Scott decision? A. The Supreme Court ruled that slavery was illegal in southern territories.
B. The Supreme Court ruled that the federal government could stop slavery in the territories.
C. The Supreme Court’s decision benefited the slave owners and said that slaves were not citizens.
D. The Supreme Court denied the legal rights of the southern states and their institution of slavery.

How did the southeast asia treaty organization (seato) carry out the united states policy on containment? a. seato promoted the creation of united nation military bases to create regional defense. b. seato founded an organization seeking to educate southeastern asian countries on communism. c. seato established a regional economic union to promote monetary security. d. seato sought to provide regional security in southeast asia by establishing alliances.