People historically used lights to communicate through methods such as signal lamps, beacons, and lanterns. For example, lighthouse beacons signaled maritime navigation, while signal lamps, like the heliograph, transmitted Morse Code over long distances using flashes of light. Additionally, various cultures employed fire beacons on hills or towers to relay messages across vast areas, especially in times of war or emergency. These techniques allowed for efficient and quick communication before the advent of modern technology.
Radios and land lines; US warships still used blinking lights.
"People use lighting lights in their homes and outside of their homes. People use vanity lights in their bathrooms, chandeliers in their entry ways and dining rooms, and porch lights on their porches."
People use all the letters of the alphabet to communicate. They use the letters to forms words. Words by convention have meanings which are used to communicate.
people use words to communicate and talk
u can communicate with people...
They use it to communicate.
they use Spanish language to communicate.
They used both, just as people today use both lights and candles. (Electric lights have been common since the 1880's)
Boats (people) can communicate silently with flags or light signals.
lights
You use phones in the house to communicate with people from your house
you killed yo self