I believe you are referring to the evacuation of Saigon (Fall of Saigon) on April 30, 1975. If so, the correct answer is c. The U.S. evacuated Vietnamese whose lives would be in the greatest danger if they were to be left behind.
Explanation:
Andrew Jackson sought to renew a policy of political and military action for the removal of the Indians from these lands and worked toward enacting a law for Indian removal. ... The Indian Removal Act was put in place to give to the Southern states the land that belonged to the Native Americans.
Robert Fulton was the first to accomplish this task. By purchasing a steam engine built by James Watt, he was able to use the engine to power a 133-foot steamboat, the Clermont. In 1807, Robert Fulton's boat made a journey from New York City to Albany. By the 1830s, steamboats were the convention.
<span>The North Atlantic Treaty Organisation (NATO) was created in 1949. NATO was seen as being a viable military deterrent against the military might of the Soviet Union. In response to NATO admitting the membership of West Germany, the Soviet Union was to gather all its client states in Eastern Europe into the Warsaw Pact in May 1955 so in my opinion if this had not happened the cold was would have been avoided </span>
Answer:
The Reign of Terror instituted the conscripted army, which saved France from invasion by other countries and in that sense preserved the Revolution.