History, 24.09.2019 12:00 allisonzawodny3533
Which best describes a development that improved railroad safety? a. railroads adopted standard time to coordinate schedules. b. railroads offered fold-down beds so that people could sleep more comfortably. c. companies standardized track technology so that they could use each other’s tracks. d. companies replaced hand-operated brakes with air brakes on trains.
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How was the u.s. economy different from european economies following world war 1?
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Which best describes a development that improved railroad safety? a. railroads adopted standard tim...
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