Choice The Pony Express was a

fast mail delivery service that operated in the western United States in the mid-1800s, delivering mail and messages by horseback riders along a relay system of stations.

what was it?

The Pony Express was a revolutionary mail delivery service that operated in the western United States from April 1860 to October 1861. It was known for its fast and efficient delivery of mail, covering a route of nearly 2,000 miles between Missouri and California. Riders on horseback would carry the mail in relays, traveling day and night to ensure quick delivery. The Pony Express played a crucial role in communication during a time when the West was still being settled and traditional mail delivery methods were slow and unreliable.