What does it mean that the vice president is “only a heartbeat away” from the presidency?

This chart shows the number of soldiers killed according to two different sources. source a is a book written by university professors. source b is from a well-known historical website. in a paragraph, explain why the data presented is different, and evaluate the reliability of each source. which should be used in a school research project, and why?

Of the 8 territories that were brought under the flag of the united states by 1853, which one do you think was the most important addition to the growth of the united states?

In the context of c. h. cooley's theory of groups, identify each attribute as either belonging to a primary group or a secondary group.