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.
I would say 30,000 cause all the next developments were from the 1860's forward and that is when huge growth happened, after 1860.
The ideas leveled up not only on their rights and privileges as a citizen. The ideology was understood as a national concern. Through a basic understanding of their own rights, the realization of the issue was associated as a concern of all as a nation that strives to have a decent living. They saw the connection between social classes concern is related. Thus, the ideas of liberty awakened nationalism among the American colonies.