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 often led to refusal. The first adhesive stamp, the Penny Black, was issued in Britain in 1840. It featured a profile of Queen Victoria and cost one penny. Interestingly, the stamp was not initially popular because people were used to the old system. However, within a few years, it became a standard practice worldwide. Now, let's look at how stamps influenced business communication...