History of human communication methods

Verbal language is the most popular means of communication for humans. Today we can communicate with each other anytime, anywhere, through various means such as phone, instant messaging (SMS), chat yahoo, email, use facebook social network, twitter, youtube .

But in ancient times, when the technical level was not developed, how did people contact each other? They use pigeons to deliver letters, or use private symbols in caves to communicate to each other, using smoke to make a signal…. In this infographic, please introduce to you the breakthrough development process of communication tools from the past to the present, making it easier for people to connect with each other.