Good morning, everyone. Today we're going to discuss the history of the postal service. In the 19th century, the introduction of the postage stamp revolutionized communication. Before stamps, the recipient paid for the mail, which was often expensive and led to many refusals. The first adhesive stamp, the Penny Black, was issued in Britain in 1840. It cost one penny and allowed letters to be sent anywhere in the country. This innovation not only reduced costs but also increased the volume of mail dramatically. Interestingly, the idea of prepaying postage was initially met with skepticism, but it soon became a global standard.