Smoke Signals (1 янв 150 г. до нашей эры – 1 фев 1300 г.)
Описание:
In ancient china soldiers along the great wall used smoke signals to signal an attack from tower to tower. smoke signals are one of the earliest forms of long distance communication.Добавлено на ленту времени:
Дата:
1 янв 150 г. до нашей эры
1 фев 1300 г.
~ 1451 years