How do paragraphs 6-7 contribute to the development of ideas in the text?

A
They prove that the United States primarily benefited from WWII as the Great Depression ended.
B
They show that the United States experienced negative and positive consequences from the war.
C
They emphasize the United States’ desire to preserve the civil liberties of citizens.
D
They reinforce the idea that the United States never should have entered WWII.