Answer:
U.S supreme court
Explanation:
Dred Scott v. Sandford, 60 U.S. (19 How.) 393 (1857), was a landmark decision of the U.S. Supreme Court in which the Court held that the Constitution of the United States was not meant to include American citizenship for black people, regardless of whether they were enslaved or free, and therefore the rights and privileges it confers upon American citizens could not apply to them.
C....it pretty much told all of the countries to back off of south america
Its C. Remember that this is a post-WW2 act when the USA was seeking to end the spread of communism to any further countries. The USA thought that if they gave the destroyed countries money to rebuild they would less likely to fall to communism because they would be stable.
Answer: used as propaganda to demand the removal of British troops from Boston.
Explanation: hope this helps