A pony express rider would get a new horse about every hour!!!
Back in the olden times of horses and before phones, people had to write letters to each other to communicate and the pony express was the fastest way for one person to get a letter to another person. To keep their horses gallolping as fast as they could, riders got a new horse every 10 miles! That's a ton of horses just to mail a letter!!!! Dont complain when the post office makes making a letter costs 46 cents because thats way cheaper per letter because they dont deliver mail on horseback anymore!!!! Now dont forget to remember to know about the american west and the pony express!!!