As a Defense Measure to Keep Invading Military Troops from Using

question 43

Multiple Choice

As a defense measure to keep invading military troops from using their railroads,Spain and Russia

• A) built explosives into bridges and tunnels.
• B) made drive controls in locomotives opposite to what they were in the rest of Europe.
• C) developed widths between the rails (gauges) different from those of the rest of Europe.
• D) All of the above
• E) None of the above

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