The correct answer is B. The United States assumed that they would be first into space, before the Soviets.
Explanation:
During the Cold War, there was a strong dispute between the United States and the Soviet Union to develop spatial technology and send rockets, satellites, and similar to the space. In this context, the U.S. leaders and scientists strongly believed the U.S. would be the first one into space because there had been huge advancements in this area. However, in 1957 the Soviet Union launched Sputnik 1, which was the first satellite in the space. Additionally, this unexpected victory of the Soviet Union caused a loss of confidence in the United States.
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The new themes in American art and literature include, modernism, sexuality, technology and social progress. These themes signify that Americans value innovation and uniqueness as well as progress and scientific advancements. The Art Deco style and the Cautionary Tale of Rising to Fame and Glory are two distinct examples that put the themes into art and literature.
Enslaved workers supported the Southern economy because they harvested crops on the southern plantations, and this helped the South's agriculture-based economy.