What is chewing gum?

In America a man named Adam smith made things out of rubber In his factory. One day he found chicle on a rubbery gum tree. He popped it into his mouth and chewed it but it stayed whole. Suddenly he had a bright Idea It was to heat the chicle up and add a mint flavour.Then he could sell it and call it chewing gum. In 1872 he open a small factory and tried to sell it to a company but they didn’t accept it so instead they decided they could sell it in slot machines . Then you could buy it in railway stations.