1 янв 1830 г. - Telegraph
Описание:
-developed in the 1930s to 1940s-revolutionized long distance communication
-worked by transmitting electrical signals over a wire laid between stations
Exposure: I wasn't born yet
Добавлено на ленту времени:
Дата:
1 янв 1830 г.
Сейчас
~ 195 г назад