Many years ago very simple means of communication were used: the smokes of fires at day time, the fires at night, the drums or whistling (свист) And of course they were not very reliable (надежны). So in 1832 the electric telegraph was invented by... (допишите сами? как в тексте, тк лень набирать))) and it was not cosy because the telegraph sent not words, but used a special code. Then in 1847 the telephone was invented by ....(допишите сами? как в тексте, тк лень набирать))) the telephones used lines and the lines became longer and longer. In 1915... (допишите сами? как в тексте, тк лень набирать))) Далее можно либо оба абзаца последних использовать либо тлько самы последний - ну чтоб совсем коротко