Which of the following statements are true about the u. s. supreme court's decision on dred scott?
the south felt it was a stab in the back. slaves had no right to sue for freedom. slaves did not possess citizens' rights. the north felt vindicated for its views on slavery.

After the success of the sputnik launch, the united states feared that they would never be able to launch their own satellite, the ussr had used technology developed by the united states, the soviets had superior nuclear capabilities, that any future us satellites would not be as successful.