Telegraphy is a communication method that transmits messages over long distances using electrical signals. It was first developed in the early 19th century and revolutionized long-distance communication. The most famous telegraph system used the Morse code, which encodes text characters as sequences of dots and dashes. Telegraphy played a crucial role in connecting people and businesses, especially during the Industrial Revolution. It allowed for faster communication compared to traditional methods like letters or messengers. Although telegraphy has largely been replaced by modern technologies, its principles laid the groundwork for future communication systems.