SAT Subject US History Practice Question 268: Answer and Explanation

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Question: 268

69. Why did the Pony Express last for only 18 months?

A. Too many of the riders and horses died from exhaustion and abuse.
B. The mail the riders carried was too valuable to be put at constant risk of attack from robbers.
C. The completion of the transcontinental tele graph system made the Pony Express obsolete.
D. The mail service became too expensive for the owners to continue with it.
E. The Civil War put an end to all mail service in the United States.

Correct Answer: C

Explanation:

The Pony Express service had been advertised as the fastest available, but the telegraph transmitted messages instantaneously.

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