Answer:
The smoke signal is one of the oldest forms of long-distance communication. It is a form of visual communication used over a long distance. In general smoke signals are used to transmit news, signal danger, or gather people to a common area. Phones are used today to enable people to come together and communicate. With phones, people can transmit information to one another over long distances. Flares guns can also be used to show danger in the modern world, or get someone's attention.