Answer:
In 1947, President Harry S. Truman pledged that the United States would help any nation resist communism in order to prevent its spread. His policy of containment is known as the Truman Doctrine. ... To help rebuild after the war, the United States pledged $13 billion of aid to Europe in the Marshall Plan.
Explanation:
The answer is C) The Southern colonies' economy had growing labor demands.
Crops like sugar cane, tobacco, and cotton took lots of physical labor to take care of and harvest. Plantations needed workers who they could work all the time and who would be cheap to buy.
Hope this helps! Please let me know if I'm wrong. :)
The best answer would be "Using the atomic bomb would change the world forever by making it a more dangerous place."