Why were railroads "America's first big business?" How did they help to foster a "managerial revolution?" Discuss how the development of the railroads stimulated the economy of late nineteenth-century America.

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explanation:

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it foreshadows the theme of the paragraph and hints the topic that will be discussed in the paragraph!

so, based on the research i've done. the u.s. government were always on a wild goose chase just to take down castro. he then retired his trone to his brother raul in 2008 due to some health issues. so it's obvious your answer would be:

castro had no allies from which he could receive aid.

hope this and have a fantastic day!

                                                    -wolfiewolffromsketch

the border between arizona and new mexico is a thin, black line; this indicates a state boundary.

its correct: it's a thin line, and it's a state boundary, correct