In the late 19th century, rapid industrialization most directly led to:
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a. restrictions on immigration.
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b. the relocation of american indians.
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c. the decline of railroads.
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d. the growth of cities.

Match the vocabulary word with its meaning. 1. gender a large-scale spread of a deadly disease 2. pandemic the development and use of machines, devices and ideas to further people's knowledge 3. technology the sex of a person, whether male or female