The answer is C ship building
C.They brought machines and workers together in one place.
"<span>c. Native American raids on work camps" would be the best option from the list, but the primary and most severe hardship was the rough terrain, which featured rivers, mountains, etc.</span>
<u>82</u> years passed between the Monroe doctrine and its exten-sion the Roosevelt coro-llary.
In his annual mess-ages to Congress in 1904 and 1905, Presi-dent Theodore Roosevelt expan-ded the Monroe Doctrine. The corollary sta-ted that not only were the nati-ons of the Western Hemisphere not open to coloni-zation by European powers, but that the Uni-ted States had the respons-ibility to preserve order and pro-tect life and pro-perty in those countries.
In the history of United States foreign poli-cy, the Roosevelt Corollary was an add-ition to the Monroe Doctrine articul-ated by President Theodore Roosevelt in his State of the Uni-on address in 1904 after the Vene-zuelan crisis of 1902–1903.
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To people in tokyo its mportant to know that its how japan attacked china and tokyo made a change