Which of the following was used in the United States in the late 1800s to
depict Chinese immigrants as the cause of economic problems?

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

can we see the cartoon?

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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a. poison gas was sprayed over battlefields by airplanes to weaken enemy positions before major attacks.