Which of the following represents the belief used to justify westward expansion of america borders in the 1800's monroe doctrine manifest destiny treaty missouri compromise

Don’t mind the already marked answer but taking it now

What does the timeline above show about the consequences of the persian wars? a. each city-state of greece had equal influence after the wars. b. athens and sparta continued attacking persia after the wars had ended. c. persia continued to dominate greece for years after the wars. d. the alliance between athens and sparta ended shortly after the wars.

Based on source 1 which political strategy did sncc most likely support to bring about change in society?