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55. Why did other cities in the west die?
56. Why were prairies dug up?
57. What was the real moneymaker for the railroads?
58. What did western railroads allow for, for the first time?
59. What industry developed as a result of railroads?
60. How did railroads change how time would be kept across the nation?
61. When did this occur?
62. What did railroads require more of than any other industry?
63. Who was James J. Hill?
64. How extensive was his empire?
65. What event represented the zenith of American late 19 th century technology?
66. What technology did Westinghouse provide for at this event?
67. What industry grew up as a result of the railroads?
68. What eventually replaced the steam locomotive engines?
69. What eventually replaced the Pullman cars as passenger vehicles?
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