wow your teaching was so great you are really a good teacher and I love that
before the invention of telephone people find it hard to communicate with each other and that was a lot of the way the communicate to themselves is letter or telegraph,
so before you can communicate someone far you, you have to write a letter to the person and this can like two to three days depends on the distance.
ancient time telegraph was also a communication system used to to send information by breaking the electrical an connections, it was the only easier way to communicate and it was mostly used by rich people,so before you communicate with it the person you want to communicate with must have it. and this telegraph very is very big and heavy so is normally kept in house. this is totally cool and nice and I love this path very well and it was great thanks for educating me the more I really appreciate friend