The technological innovation that had a massive impact on communication during the 19th century was the telegraph. Invented by Samuel Morse and others, the telegraph revolutionized long-distance communication by allowing messages to be sent over wires using electrical signals. It increased the speed at which information could travel, connecting people faster than ever before. The telegraph’s ability to swiftly transmit messages had profound implications for journalism, commerce, and personal communication. It laid the groundwork for future innovations in telecommunications, ultimately leading to the development of the telephone and beyond, significantly shaping the modern world and global interactions.