How did the Spanish-American War contribute to the advancement of scientific understanding of tropical diseases?

(e) a major consequence of the election was that several southern states

monopolies  came to the united states with the colonial administration. the large-scale public works needed to make the new world hospitable to old world immigrants required large companies to carry them out. these companies were granted exclusive contracts for these works by the colonial administrators. even after the american revolution, many of these colonial holdovers still functioned due to the contracts and land

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the answer is c. to explore the louisiana purchase