The black death was ? a. the attack by mongol and tatar horsemen on europe during the 13th century b. a disease that killed millions of europeans during the 14th century c. the series of civil wars between the grandsons of charlemagne for control of his empire d. a succession of extremely cold winters during the 11th century

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 united states broke it's neutrality was the constant german sinking of trading vessels resulting in the loss of lives, one example would be the lusitania.