What was the major advantage of Westinghouse’s “alternating current” power invention?

rosevelt. 1973. "slaves everywhere"

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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which statement best describes the relationship between the fourteenth amendment and the african american civil rights movement?