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