How and why did some American’s attitudes about the US role in the world affairs begin to change between 1889 and 1897?

"if i have seen farther than others," said newton, "it is because i have stood on the shoulders of giants." who were the giants to whom newton was referring? could this be said of any scientific accomplishment? explain.

The most important units of the english armies which fought during the hindred years war were composed of

What event started the space race and made americans feel their security was threatened a.) alan shepard's suborbital flight. b.) the launch of sputnik c.) the launch of explorer d.) the cuban missle crisis