Beginning about 40,000 BCE, ancient people used drawing on cave walls to express their thoughts. Piled up stones represented directions and boundaries. People used smoke signals by day and beacon fires by night in ancient China, Egypt, and Greece. Drums also were employed in many parts of the world to extend the range of the human voice for communication. Pigeon post was a major method in traditional China to communicate between distant points; people used the speed of flight and easily distinguished direction to deliver a message tied to a pigeon’s foot to transmit important or urgent messages.
Creative development of communication extended to ways to deliver fairly specific information. Among some ethnic minorities of China, bamboo was
Creative development of communication extended to ways to deliver fairly specific information. Among some ethnic minorities of China, bamboo was