Which invention filled the need for a method of communication that kept up with the industial growth and fast-paced travel?

The telegraph was the invention that filled the need for rapid communication during the industrial growth and fast-paced travel of the 19th century. It enabled messages to be sent over long distances almost instantaneously using electrical signals, significantly enhancing business operations and coordinating transportation. This innovation played a crucial role in connecting people and industries, facilitating commerce and the expansion of railroads.