Explain the importance of the supreme court ruling in dred scotts case.

giving to the best answer, asap!

Which are components pf a political party? why do we need political parties give reason.

How does the author's discussion of schroeder's study contribute to the development of ideas about how children react to mistakes?

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.