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Which of the following were developed during the transportation revolution of

the 1800s?
A. Bicycles and horse-drawn carriages
B. Submarines and subways
C. Airplanes and helicopters
D. Canals and railroads

User Timbl
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Answer:

B. Submarines and subways

User HDP
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I believe it’s D: canals and railroads
User Codinghands
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