For thousands of years, the transaction of written letters was the most effective and quick way to send and receive messages over great distances. At the dawn of the United States, the nationwide postal service did just that, and even with the advent of the telegram, the telephone, and eventually electronic instant messaging, mail delivery is still a vital part of the American experience. Watch this episode here https://fism.tv/a-moment-in-history-the-united-states-postal-service/