Please help how did industrialization affect the living conditions of Americans in the late 19th century

Which of the following is an example of an iron triangle?

What will cause your license to be revoked

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.