April 3rd, 1860: The first Pony Express rider set off from Missouri to California, promising 10-day delivery across 2,000 miles. Riders switched horses every 10-15 miles on this incredible feat of early American communication. 🔗 Watch the full video: youtu.be/QXIOXxrlERM #PonyExpress #HistoryFacts #AmericanHistory #MailService