“If I have seen farther than others,” said Newton “it because I have stood on the shoulders of giants” Could this be said of most scientific accomplishments? Explain in complete sentences

What is the definition of evolution

What role does an american citizen play in its own government ?

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.