Why is it more useful to consider ethnicity and culture instead of differences of
appearance that are used to indicate race?

What words in the preamble to the constitution reflect the principle of popular sovereignty

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true. b) some other scientific experts read the papers and provide quality control by eliminating many mistakes. c) an editor reads the papers, to make sure that all the semicolons are in the correct places. d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog. e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.

Why do you think americans were so fascinated by this idea of the united states stretching from “sea to sea”? give 2 reasons