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A. Radio
B. Telegraph
C. Telephone
D. Train

Submitted by: ALIYA NAWAZ

The Pony Express was a mail service delivering messages, newspapers, and mail using relays of horse-mounted riders that operated from April 3, 1860, to October 24, 1861, between Missouri and California in the United States of America.

Correct Answer: Telegraph

Last Updated: September 17, 2020