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History, 21.02.2020 21:04 markellg1128

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How did George Westinghouse contribute to railroad transportation?

A. His invention of air brakes made railroad travel safer and faster.
B. His development of the sleeping car made railroad travel much more comfortable.
C. His invention of the steam engine made railroad travel faster and more affordable.
D. His creation of a railroad network helped make railroad travel more efficient.

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